The next step depends on two things: what went wrong and how you paid. A charge on a credit card, an unshipped online order, and a debit transfer may look similar in a banking app, but they follow different rules and deadlines.

This checklist is for U.S. consumers. State law, account agreements, merchant policies, and federal rules can change the result. It offers practical information, not legal advice.

Start with the payment method

Use the payment rail to choose your first move:

Problem or payment method Rule or policy that usually controls First action
Credit-card billing error Fair Credit Billing Act procedures and the issuer's dispute process Send written notice to the issuer within the required period
Debit card or electronic bank transfer Electronic-transfer rules, the account agreement, and bank procedures Notify the bank immediately
Wire or peer-to-peer payment Provider rules and the bank's fraud or recall process Request a reversal or recall as soon as possible
Return because you changed your mind The retailer's disclosed return policy and state law Follow the stated return process
Missing mail, internet, or telephone order The FTC merchandise-shipping rule, if it applies Ask for shipment information, cancellation, and a refund when appropriate
Automatic renewal or free trial Subscription terms plus applicable federal and state law Cancel through the provider's documented process
Cancelled or significantly changed flight U.S. Department of Transportation refund rules and ticket terms Ask about a refund before accepting a substitute
Medical bill Provider records, insurance-plan rules, and surprise-billing protections where applicable Compare the bill with the explanation of benefits

A retailer's return policy doesn't replace the credit-card issuer's billing-error process. The reverse is also true: disputing a card charge doesn't guarantee a refund for every complaint about quality, service, or a change of mind.

For any problem, begin with these moves:

  1. Stop further loss. Don't send more money, share a one-time passcode, or use a link from an unexpected message.
  2. Save proof. Keep receipts, order confirmations, terms, screenshots, tracking details, photos, emails, and cancellation records.
  3. Write to the business. Describe the problem, dates, amount, and remedy you want.
  4. Use the right dispute channel. A credit-card billing error goes to the issuer. Other payment methods usually require the bank, platform, or payment provider.
  5. Cancel recurring charges promptly. Save the confirmation and check the next statement.
  6. Secure exposed accounts. Change reused passwords, turn on two-factor authentication, and replace compromised cards.
  7. Calendar every deadline. A merchant review or agency complaint may not extend a legal or contractual deadline.

Save evidence before you complain

Put the records in one dated folder. Include:

Write a short timeline while the details are fresh. Note what happened, when you contacted the business, what it promised, and what remains unresolved. Send copies rather than irreplaceable originals, and redact full account numbers and other sensitive information.

Orders, refunds, and defective products

When a seller doesn't ship

There isn't a universal federal refund right for an unwanted purchase just because you changed your mind. In that situation, the seller's posted return policy usually controls, subject to state law and any warranty or payment-dispute rights.

Mail, internet, and telephone orders can be different. The FTC's Mail, Internet, or Telephone Order Merchandise Rule generally requires a seller to ship within the period it promised. If the seller gave no shipping time, the rule generally uses 30 days.

When the seller can't meet the promised date, it generally must notify you and give you a chance to agree to a delay or cancel for a refund. Keep the original delivery promise and the delay notice. An order-status page may help show what the seller represented, but save a screenshot rather than assuming the page will remain available.

When something arrives that you never ordered

The FTC says consumers generally don't have to pay for or return merchandise they receive without ordering. See the FTC guidance on unordered products and missing merchandise.

First check whether another person in your household placed the order or whether the item was a gift. If nobody ordered it, don't give payment details to a caller who says you must pay return shipping. Keep the packaging and delivery label if identity theft is possible, and contact the retailer using contact information you locate independently.

When a product is defective

Start with the seller or manufacturer and read the written warranty. Ask for the remedy the warranty promises, while following its requirements for notice, repairs, replacement, or shipping.

Keep repair orders and dates. Vehicle lemon laws often set their own eligibility rules, repair opportunities, notice requirements, and arbitration procedures. They vary by state, so a deadline advertised for one state may not apply where you live.

If the product could injure someone:

Credit-card billing errors: send the written dispute

For a qualifying credit-card billing error, the issuer must generally receive your written dispute within 60 days after the first statement containing the error was sent. The FTC's credit-card dispute guidance describes the process.

Examples can include an unauthorized charge, goods or services that weren't received, an incorrect amount, or a duplicate charge. To preserve the formal process:

  1. Write to the card issuer at the billing-dispute address on the statement. A phone call may start an investigation, but it generally doesn't replace the written notice.
  2. Identify the account without printing the full card number.
  3. List the transaction date, merchant, amount, and reason for the dispute.
  4. Attach copies of supporting records.
  5. Make sure the letter arrives within the 60-day period, and keep a copy and proof of delivery.
  6. Pay the part of the balance that isn't disputed.

The issuer generally must acknowledge the dispute in writing within 30 days unless it has already resolved the matter. It generally must resolve the dispute within two billing cycles, and no later than 90 days after receiving the notice. During the investigation, you generally don't have to pay the disputed amount or related finance charges. Continue paying undisputed amounts and follow the issuer's instructions.

A card-network chargeback is related to, but different from, the Fair Credit Billing Act process. Network rules may have their own time limits and evidence requirements. If the issuer denies the dispute, ask for the written explanation and supporting documents. Check whether the denial addressed a statutory billing error or only a separate network chargeback.

Debit cards, bank transfers, wires, and peer-to-peer payments

The credit-card 60-day process doesn't apply to every payment method.

For an unauthorized debit-card transaction or electronic bank transfer, contact the bank as soon as you notice it. Federal and account-specific reporting periods can affect your protection, and delay can make recovery harder. Ask the bank:

A wire transfer or peer-to-peer payment needs an immediate call to the bank or provider. Request a recall, reversal, or fraud review and give an accurate account of what happened. Recovery may be limited when you personally authorized the transfer, even if a scammer persuaded you to do it.

Gift-card scams also require quick action. Contact the issuer through its official number, keep the card and purchase receipt, and report the scam. Don't pay a second company that promises to recover your money for an upfront fee.

Scam response and identity theft

Be suspicious of a message or call that creates urgency, demands secrecy, threatens arrest or account closure, or asks for a gift card, wire transfer, cryptocurrency, remote computer access, or one-time passcode. Other warning signs include a check that requires you to send money back, a job or investment requiring an upfront fee, and a "refund recovery" service that wants payment before it acts.

Verify an unexpected request through an official app, statement, or website. Don't use the phone number or link in the suspicious message. Caller ID, logos, email addresses, and search results can all be faked.

If you paid a scammer, contact the payment provider immediately. Tell it what happened, ask whether the transaction can be stopped or recalled, and secure the account. Contact a merchant only through a verified channel. Don't describe an authorized payment as unauthorized; explain the facts accurately.

Credit freezes and fraud alerts

A security freeze restricts prospective creditors' access to your credit report and doesn't lower your credit score. You can still access your own report. A fraud alert is less restrictive: it asks businesses to take extra steps to verify your identity instead of blocking access altogether. The guidance on security freezes and fraud alerts explains the difference.

After suspected identity theft:

  1. Place a freeze with each credit bureau if you want the strongest barrier to new-credit applications.
  2. Consider a fraud alert if you need a less restrictive option.
  3. Review your reports through AnnualCreditReport.com.
  4. Change reused passwords and sign out of active sessions.
  5. Turn on two-factor authentication for email, banking, and shopping accounts.
  6. Replace compromised payment cards and update automatic payments.
  7. Keep confirmation numbers and records of fraudulent accounts and reports.

A freeze helps with new-credit applications. It doesn't reverse existing charges or remove fraudulent information by itself.

Subscription cancellation and free trials

Before starting a subscription or free trial, record the regular price, billing frequency, trial end date, renewal terms, cancellation method, and account email. Put the renewal date on your calendar.

Use the account or support channel specified by the service. After cancelling, keep the final cancellation screen, confirmation email or case number, and the date and time of the request. Check the next statement for another charge.

The FTC announced an amended Negative Option Rule addressing recurring subscriptions, automatic renewals, and free trials offered online, by phone, or in person. The Federal Register notice describes phased effective dates. Because the rule's status and effective dates can change, don't assume that "three-click cancellation" is a guaranteed federal right in every situation. Check current FTC and state guidance when the timing matters.

If billing continues after a documented cancellation, ask the provider for a written correction. A post-cancellation credit-card charge may qualify for the billing-error process. For a debit card or bank transfer, contact the bank or provider and ask which notice procedure applies.

Airline refunds and travel charges

A DOT refund is not the same as automatic cash compensation for every delay. Under the DOT's airline refund rule, a cancelled flight or significant change may qualify for a refund when the passenger doesn't accept the alternative offered by the airline, subject to the rule's conditions. Some ancillary fees may also be refundable when the paid service wasn't provided.

Before accepting a voucher or rebooking, ask the airline whether that choice affects refund eligibility. Keep the itinerary, schedule-change notice, boarding pass, refund request, and receipts for additional services. If the airline refuses a refund that appears to be covered, make the request in writing and file a complaint with the DOT.

For rental cars and lodging:

Medical bills and insurance disputes

There is no single federal 48-hour or 60-day deadline for every medical bill. The controlling deadline may come from the health plan, provider agreement, state law, or a specific federal protection.

Before paying, compare the provider's itemized bill with the insurer's explanation of benefits. Check for duplicate services, services you didn't receive, incorrect dates, the wrong patient, a missing insurance payment, or an amount above the plan's stated responsibility.

The provider's billing office and the insurer can answer different parts of the problem. Ask:

The No Surprises Act can protect patients from certain emergency and out-of-network facility bills, but it doesn't cover every out-of-network charge. The type of care, facility, health plan, and consent documents may matter. If surprise-billing protections might apply, ask the insurer which process to use before agreeing to a payment plan.

An insurance appeal is separate from a credit-card dispute. The card issuer generally can't decide whether treatment was covered by a health plan. Follow the plan's appeal procedure while separately correcting any actual card billing error.

Privacy and account-data requests

U.S. privacy rights depend on the state, the business, the data involved, and the transaction. For example, the California CCPA and CPRA can give eligible California residents rights to know, access, correct, delete, or opt out of certain data uses, subject to exceptions. Other states use different thresholds, rights, and deadlines.

Practical steps:

A privacy request doesn't necessarily require deletion of data the company must retain for security, legal, accounting, or transaction purposes. If the business denies a request, save the explanation and check your state's privacy regulator or attorney general for the appropriate complaint route.

Complaints and escalation

Give the business a clear chance to fix the problem, but make the request easy to prove. Include:

Then choose the route that matches the dispute:

Arbitration or small claims court?

Option May fit when Main limitation
Merchant resolution You want a fast, low-cost remedy The business may deny the request
Payment dispute The payment method offers a dispute process Deadlines and eligible reasons vary
Arbitration The contract requires or permits it The decision may be binding and appeals are limited
Small claims court The amount fits the local limit and the business can be sued there Filing, service, jurisdiction, and dollar limits vary

Read the contract for an arbitration clause, a required pre-suit notice, governing law, and the place where a claim must be filed. A merchant review or agency complaint may not pause the statute of limitations. Local legal help may be worthwhile when the amount is significant, the deadline is close, or the contract is unclear.

Deadlines to put on your calendar

Issue Key timing or rule Important limit
Credit-card billing error Written notice generally must arrive within 60 days of the first statement with the error; acknowledgment is generally due within 30 days and resolution within two billing cycles, no later than 90 days This isn't the debit-card process
Online or telephone order Ship by the promised date, or generally within 30 days if no date was given The FTC rule applies only when its coverage conditions are met
Subscription Follow the cancellation terms and applicable law Don't assume a universal three-click rule
Debit or electronic transfer Notify the bank immediately Account and federal notice periods can affect protection
Airline refund Request a refund when DOT conditions apply A delay alone doesn't automatically create cash compensation
Medical bill Follow the health plan's appeal and provider-dispute deadlines There is no universal deadline for every bill
Identity theft Freeze accounts and report suspicious activity as soon as possible A freeze doesn't reverse past transactions

Open a dated folder today, save the original terms and statement, and send the first written request with the exact remedy you want. If money is still moving through a bank account or payment app, call that provider before spending time on a long explanation.