Submit or mail the Declaration form, Statement of Social Security Number, creditor mailing list, and filing fee to the bankruptcy court. Bankruptcy is a process in federal court that helps people who owe money get relief from debts they cannot pay.This guide can help you. Mortgage Proof of Claim Attachment (REVISED), 410A. Notice of Mortgage Payment Change, 410S-1. This video provides general information to creditors about filling out and filing a Proof of Claim with the Court. The purpose of the letter is to describe why the borrower may not be able to make their mortgage, car loan, or other debt payments. If you are in an open bankruptcy case then you will also need the signature of your bankruptcy attorney. We provide helpful tips and resources to help you file Chapter 7 bankruptcy in your state without a lawyer.