Subject: Application for Account Upgrade
Dear __________ (Name of Bank Official),
I am __________ (Your Name), an account holder at your branch with Account ID: __________ (Your Account ID).
I am writing to request an upgrade from a minor to a major account. __________ (Specify briefly the reason for the upgrade).
I shall be obliged if you could process this request at your earliest convenience. I assure you of my continued loyalty as a customer.
Thank you for your attention to this matter.
Sincerely,
__________ (Your Name)
__________ (Your Address)