Sample Letter to Bank Informing the Death of the Account Holder. The death claim letter should be written in the formal letter format.Notify Bank of America. We'll ask you for the deceased customer's full legal name and Social Security number to identify their accounts. When a family member or friend has died, it is important to notify various government agencies, banks, creditors and credit reporting agencies of the death. Start the letter with your introduction and the reason for writing the letter. Enter the 6 letters or numbers shown within the image above. Letters are not case-sensitive. You should produce the concerned Bank branch the death certificate from municipal authority as proof of that persons demise. In the days, weeks and months that followed, New Zealanders united around those affected and spoke out against racism, extremism and extremist violence.