Your Bank Made a Mistake. Now What?
You check your statement and something's wrong — an unauthorized charge, a duplicate transaction, a fee that shouldn't be there. Your first instinct is to call. But the person on the phone can't always help, and verbal complaints leave no paper trail.
Written disputes are legally stronger than phone calls. Under federal regulations like the Electronic Fund Transfer Act and the Fair Credit Billing Act, your rights are triggered by written notice, not phone conversations.
These templates give you the language and structure to dispute bank errors effectively and protect your rights throughout the process.
Unauthorized Transaction Dispute
Subject: Unauthorized transaction dispute — Account [last 4 digits]
'Dear [Bank Name] Disputes Department, I am writing to dispute an unauthorized transaction on my account. Account: [last 4 digits]. Transaction: [amount, date, merchant name/description]. I did not authorize this transaction. I have not lost my card, shared my PIN, or given anyone access to my account [or: I reported my card lost/stolen on date]. Per the Electronic Fund Transfer Act, I am notifying you within [timeframe — you have 60 days from when the statement was sent]. I request: immediate provisional credit for [amount], investigation of this transaction, and a new card/account number to prevent further unauthorized charges. Please confirm receipt of this dispute and provide a case number.'
File the dispute in writing within 60 days of the statement date. Banks must investigate within 10 business days (or 20 for new accounts) and provide provisional credit while investigating. Know these timelines — they're your legal rights.
Fee Dispute
'Dear [Bank Name], I am disputing the following fee charged to my account: Fee: [type — overdraft, maintenance, ATM, wire transfer]. Amount: [amount]. Date: [date]. Reason for dispute: [specific — I maintain the minimum balance required to waive this fee / I was not notified of this fee / this fee was applied in error because...]. Supporting evidence: [statement showing qualifying balance, fee schedule, previous communications]. I request reversal of this fee and confirmation that my account has been credited. If you believe the fee was correctly applied, please provide the specific account agreement provision that authorizes it.'
Banks reverse fees more often than most people realize — especially for customers with good history. The key is asking specifically and citing why the fee shouldn't apply, not just saying 'this is unfair.'
Merchant Dispute (Chargeback Request)
'Dear [Bank Name], I am requesting a chargeback for the following transaction: Transaction: [amount, date, merchant]. Reason: [merchandise not received / merchandise significantly not as described / service not provided / duplicate charge / canceled order still charged]. Steps I've taken with the merchant: [dates and outcomes of direct contact attempts]. Evidence: [order confirmation, merchant communication, photos of defective product, cancellation confirmation]. I request a chargeback under [Visa/Mastercard reason code if known] and provisional credit while the dispute is processed.'
Always try to resolve with the merchant first — banks will ask if you did. Document those attempts. Then file the chargeback with your bank, providing all evidence upfront to speed the process.
Error Resolution for Checking/Savings
'Dear [Bank Name], I am reporting an error on my [checking/savings] account per the Electronic Fund Transfer Act, 15 USC 1693f. The error: [specific — incorrect amount, transaction I didn't make, missing deposit, computational error]. Account: [last 4 digits]. Date of error: [date]. Amount: [amount]. I am requesting: investigation of this error, provisional credit within 10 business days, and written notification of the results of your investigation. Per federal law, you must investigate within 10 business days (or provide provisional credit and complete investigation within 45 days). Please confirm receipt and provide a case number.'
Citing the specific federal statute signals that you know your rights. Banks handle these disputes more carefully when the customer demonstrates legal awareness.
Following Up on a Pending Dispute
'Dear [Bank Name], I am following up on dispute case [number], filed on [date] regarding [brief description]. It has been [X days] since I filed the dispute. Per [applicable regulation], you are required to [complete investigation within timeframe / provide provisional credit / notify me of results]. Current status: [what you know]. I request: [update on investigation status, provisional credit if not yet provided, written results]. Please respond within [5 business days]. If I do not receive a satisfactory response, I will escalate this to the [CFPB / OCC / state banking regulator].'
The CFPB complaint portal (consumerfinance.gov/complaint) is extremely effective for bank disputes. Banks take CFPB complaints seriously because regulators track them.
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