The Branch Manager,
I am _________ (name) holding a ________ (Savings/Current/Credit Limit) account in your branch bearing account number ________ (Account Number).
Through this email, I would like to request you to update my new mobile number ________ (mobile number) to my account as I have _______ (lost/ misplaced) the previously registered mobile number i.e. _______ (previously registered number) which was linked to my account.
Kindly do the needful at the earliest so that I will able to receive bank-related alert messages. As per requirement, I am hereby attaching, bank specified customer request form, KYC documents (if applicable), and other supporting documents for updating my contact number.
Thankful as always,
[Digital Signature]
____________ (Signature)
____________ (Name),
____________ (Contact details)