Steps Involved in Writing a Bank Verification Letter ; Name of the Account Holder. Refers to the name of the customer who holds the account.Name of Customer Being Debited: 6. Account Number of Customer Being Debited: 7. Here are some sample letters of request for bank statements for your better understanding and reference. A bank confirmation letter (BCL) is a correspondence between banks that confirms the existence of a valid line of credit to one of its customers. An application to the bank manager can be written in the format of a formal letter. You can start the letter with the sender's complete address and the date. Does anyone has a detailed employee confirmation letter format? I have seen quite a few in this forum but I thought there might be some more detailed ones.