To: The [Grievance Redressal Officer / Principal Nodal Officer]
HDFC Bank Limited
[address from HDFC Bank's grievance page]

Subject: Escalation of complaint no. [______], customer ID ending [last 4 digits only]

I lodged the complaint above on [DD-MM-YYYY] through [branch / PhoneBanking / email / online form].
[I have had no response in [__] working days. / HDFC Bank replied on [date] saying ____, which does not resolve it because ____.]

What happened:
[2 to 5 short lines, in date order, with amounts and transaction dates]

What I am asking for:
[refund of Rs. ____ / reversal of charge ____ / correction of ____ / written reason]

If this is not resolved within 30 days of my first complaint, I will approach the RBI Ombudsman under the Reserve Bank - Integrated Ombudsman Scheme, 2026.

Attached: [copy of first complaint and acknowledgement, statement extract, HDFC Bank's reply]

Name: [your name]
Branch: [branch name]
Registered mobile: [number]
Date: [DD-MM-YYYY]

Do not send your full account number, card number, CVV, PIN, OTP or password.