In this article, we walk you through all the steps to writing and formatting the letter, including a sample and a template. How to use the template: 1.In the sample letter, fill in your personal information. I do not plan to use the account, therefore, I would like the credit line to be closed out. It can be as simple as "we are closing your account as of X date. Dear Bank Manager, I am writing to request the closure of my bank account with the number 123456789. Your bank may have an account closing letter template or form that you can download from its website or pick up at a branch. You have to tell your credit or debit card company about any error you're disputing within 60 days of when the first statement with the charge was sent to you. Your bank may have an account closing letter template or form that you can download from its website or pick up at a branch. Information to include in your dispute letter.