If your lender agrees to settle a debt for less than you owe, you'll need a written agreement of the terms. Debt collection letter from attorney can be a sensitive issue, no matter what side you're on.Also includes sample letters to debt collectors. Today's Date: Collector's Name: Collector's Address : RE: Account of. When a debt collector is asking you to pay money, you're entitled to ask for details. If you send a paid in full letter to your creditor or debt collection agency, it informs them that you're making your final payment. The law protects certain income and property from creditors. If a creditor wins a case against you in court, you are responsible for the debt. As such, we would appreciate you making this payment as soon as possible. Under the debt collection rule, debt collectors have to provide you with certain information about your debt, known as validation information.