To fill out this letter, clearly write your name and address at the top. Include the date and the collection agency's name and address.Learn how to write an effective collection dispute letter with our guide and templates. I respectfully request that you provide me with the following: 1. The amount of the debt;. 2. A demand letter is written notice to the debtor that includes a formal demand for payment of the debt. Want to settle your debt? You can submit a request to settle your tax obligation for a payment of less than the full amount owed. This is called an Offer in Compromise (OIC). A debt settlement letter contains a proposal offer that will hopefully open the door to negotiate a fair and reasonable debt settlement.