Here;s how you can write this letter:
Follow this format below
To
The Manager
[Address of branch]

From
[Your details information]

Sub: For changing my address.

Dear Sir,

As I would like to update my personal details linked to my bank account [your account number].

Please update your records with the details mentioned below.

[Your previous address]

[Your present address]


Thank you,

Yours faithfully,

[Your name & signature]

Make sure to complete every detail that is being asked to your letter. Show formality by using correct word and terms. Avoid wrong spellings.

I hope this will help.

Consider these guidelines below :

Here`s the format that you can follow :

Complete Date

ATTN: (Branch Manager + Full Name)

Name of the Branch

Dear Sir/Ma`am,

This letter is to inform you that I wish to transfer my account from your branch to ( other branch name ) at (other branch address ). My name is (complete name) and my account number is (your account number).

Thank you for your consideration.
I hope that I will be hearing from you soon concerning the completion of this action. It has been a pleasure banking with your branch.

.

Sincerely,
Name and signature.

You could write a formal letter to the bank manager stating the reason of your request with the account details of your debit card but without your PIN. You could use the guide below;
Date

Full name of the Bank Manager
Position in Bank i.e. Manager
Branch Address

Dear Mr./Mrs/Ms. Surname,

Your greetings. Your name, age, address, and account number. Reason for writing the letter.

Yours sincerely,
Signature over printed name.
Contact number.

Instead of a letter which will sometimes require longer period of processing from the drafting and sending of your letter up to the approval of your request depending. Try to talk instead with your debit bank company because there might be easier way of transferring amount to another account.
Some bank has online banking and mobile too which only requires enrollment.

Just mention ur account number saying that you wanted to reverse back your debit card transaction which as been declined....also mention the date ,time and amount of transaction.

Please contact the bank official and then ask him the procedures and documents required to get the amount back , and then write a letter and hand over to him.

There should be an online site where you can send a message and ask. Or you can go to the bank itsself and ask someone.

2 days before widraw money my atm but money not get but account balance already reduced it.wht ican do?

Make it a formal letter..with the from address ,to adress, date and the subject,.

I am school principal my staff salary given to ecs how to inform Bank manager.