Most courteously, I am __________ (your name) and I am holding a loan account with your bank i.e. ___________ (bank name) and my branch is ___________ (branch).
This email is for making a request regarding my loan account i.e _______ (Loan Account Number), I would like to inform you that I am currently having a loan of ________ (mention amount) and the due date for the same is __________ (mention date). I am writing this to request you that I am willing to get the loan repayment date rescheduled to __/__/____ (date) due to the _____________ (mention reason).
I shall be highly obliged for your kind support in this regard. Please feel free to contact me at __________ (mention contact details) for further queries.
[Digital Signature – if applicable]
____________ (Contact details)