Respected Sir/Madam,
Most humbly, I would like to inform you that my name is _________ (name) and I hold a _________(mention type of bank account – savings/current/basic/other) account having account number ___________ (mention number).
I write this email to request you to change my mobile number in your records. My new mobile number is ____________ (mention mobile number). As per the requirement, please find all required documents for the updation. I hope that you will update the mobile number so that I can continue to use banking services. If you wish to contact me, you can contact me at the same contact number.
Yours sincerely,
___________ (Your name),
___________ (Account number),
___________ (Contact details)
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