Sample Letter – Asking for a debt write-off when someone is deceased. Travis Credit Union contacts, phone numbers, addresses, and holiday closures.You will need to provide a certified copy of the death certificate to close the account. Step 3: Figure out who is legally responsible for any credit card debt. Notify Bank of America. We'll ask you for the deceased customer's full legal name and Social Security number to identify their accounts. You might be able to fill out an affidavit and present that along with your mom's death certificate to the bank. However, to officially close the account, it's smart to follow up in writing.