Find out how you can use a lawyer debt collection letter to make sure you get paid? We've also included a debt collection letter sample.I am writing to inform you that I disagree with all debts you are collecting on or are placed with your company, in my name. Today's Date: Collector's Name: Collector's Address : RE: Account of. Mention very clearly the fact in the letter that you are disputing the debt. Avoid any ambiguous language or assumptions. Fill in your information on the template letter and edit it as needed to fit your situation. 3. Print the letter and mail it. Download English and translated versions of Debt Collection Rule model form. A debt collection letter informs clients about their unpaid bills.