How to Write a Complaint Letter to a Bank in India

iGuideline Summary

Banks in India are regulated by the Reserve Bank of India (RBI) and are required to maintain a robust consumer grievance redressal mechanism under the Banking Regulation Act, 1949 and the RBI's Customer Service Master Circular. Every bank must have a dedicated Grievance Redressal Officer, a Nodal Officer for escalations, and must resolve written complaints within 30 days of receipt. If your bank fails to acknowledge your complaint within 30 days or provides an unsatisfactory response, you are entitled to file with the RBI Integrated Ombudsman — a free, independent dispute resolution mechanism. The RBI Integrated Ombudsman Scheme (launched 2021) covers all scheduled commercial banks, regional rural banks, cooperative banks, non-banking financial companies (NBFCs), and payment system operators. The scheme covers complaints about unauthorized transactions, refund delays, account closures, excessive charges, mis-selling of financial products, loan processing issues, and deficiencies in digital banking services including UPI, NEFT, RTGS, and IMPS. For digital payment failures — such as a UPI transaction that deducted money but did not credit the recipient — the NPCI mandates auto-reversal within T+5 business days. If the reversal does not happen, you must file a written complaint with your bank and obtain a written acknowledgment. Banks are required to credit the failed transaction amount within T+10 business days of the original transaction under the RBI's framework on customer protection in unauthorized electronic banking transactions. An effective bank complaint letter must include: (1) your full name and account number; (2) the exact date, amount, and nature of the transaction or issue; (3) the transaction reference number, UTR number, or complaint reference number from earlier interactions; (4) a chronological account of events and steps already taken; (5) the specific relief you are seeking — refund of ₹X, reversal of charge, correction of records; and (6) a reasonable deadline (7–15 business days). GetNyay is India's AI complaint letter drafting platform that generates structured bank complaint letters for all types of banking disputes — failed transactions, unauthorized debits, refund delays, account freezes, loan issues, and more. GetNyay is also used by legal drafting professionals, advocates, cyber cafes, and arjanvis through the Attorney Dashboard Platform to draft complaint letters for their clients at scale, with Word and PDF export in minutes.

✎Sample Complaint Format

To,
The Branch Manager / Nodal Officer,
[Bank Name],
[Branch Name] Branch,
[Complete Branch Address]

Date: [DD/MM/YYYY]

Subject: Formal Complaint – Account No. [XXXXXXXXXXXX] – [Nature of Issue]

Dear Sir / Madam,

I, [Your Full Name], holding Savings Account No. [XXXXXXXXXXXX] with your
[Branch Name] branch, am writing to formally register the following complaint.

Transaction / Issue Details:
• Account Number  : [XXXXXXXXXXXX]
• Date of Issue   : [DD/MM/YYYY]
• Transaction ID  : [UTR / Reference Number, if applicable]
• Amount Involved : ₹[Amount]
• Nature of Issue : [Failed Transaction / Unauthorized Debit / Refund Delay / etc.]

Detailed Description:
[Explain clearly — e.g., "On [date], an amount of ₹[X] was debited from my account
via UPI (UTR: XXXX) for a transfer to [recipient]. The debit was confirmed via SMS
but the amount was neither credited to the recipient nor reversed to my account
after T+5 business days as required by NPCI guidelines."]

Previous Complaint Reference:
• Complaint raised on [Date] — Reference No. [XXXX]
• Response received: [No response / Unsatisfactory response]

Relief Requested:
I request [reversal / refund / correction] of ₹[Amount] to my account within
7 working days, failing which I will escalate to the RBI Integrated Ombudsman
at cms.rbi.org.in as permitted under the RBI Integrated Ombudsman Scheme, 2021.

Yours faithfully,
[Your Full Name]
[Mobile Number Registered with Bank]
[Email Address]

This is a structural sample only. GetNyay generates a complete, personalized complaint based on your specific details.

When to File This Complaint

• Failed UPI, NEFT, or RTGS transaction not reversed within T+5 business days
• Unauthorized or fraudulent debit from your account not refunded after reporting
• Refund from a merchant not credited to your account within 5–7 business days
• Bank imposed charges (service fees, penalty) without prior written notice
• Account frozen or lien marked without a valid written order
• Loan EMI debited in error or double-debited in the same month
• Bank did not respond to your complaint within 30 days or gave an unsatisfactory response

Documents Required

• Bank account statement showing the disputed transaction
• Transaction SMS or email confirmation from the bank
• UTR number / transaction reference ID from your bank or UPI app
• Screenshot of the UPI app or net banking portal showing transaction status
• Previous complaint reference number or acknowledgment from the bank
• Photo ID — Aadhaar Card or PAN Card
• Loan agreement or sanction letter copy (for loan-related disputes)

Common Mistakes to Avoid

• Filing verbally without a written complaint — verbal complaints have no legal standing
• Not saving the transaction SMS, UTR number, or UPI app screenshot before disputing
• Going directly to the RBI Ombudsman without first completing the bank's internal process
• Missing the one-year limitation period for RBI Ombudsman complaints from date of cause
• Not stating the exact relief amount — vague requests result in partial or no resolution
• Paying the disputed charges before the complaint is fully resolved