To,
The Manager,
__________ (Bank Name),
__________ (Branch Address)

Date: __/__/____ (Date),

Subject: Request for Service Activation on Bank Account

Respected Sir/Madam,

My name is _________ (Name), and I maintain a ___________ (savings/current/other) account with your branch, having the account number _________ (account number).

I am writing to request the activation of _______ service (service name) on my bank account. The account was opened in _________ (time/year), and I find it necessary to utilize this service for ______ (mention reason). I hope that you will consider this request favorably and process it at your earliest convenience. Your prompt attention to this matter would be highly appreciated.

I assure you that there is a sufficient balance in my bank account to cover any applicable charges.

Thanking you for your cooperation.

Regards,
_________ (Signature)
_________ (Your name),
_________ (Contact number)