What do you include in a debt collection letter? A cease and desist letter is a formal written request that you send a debt collector telling them to stop contacting you about a debt.A demand letter is written notice to the debtor that includes a formal demand for payment of the debt. List your name, account information, the original creditor of the debt, and the debt collection agencies identifying information. I received a letter with my name and address from a collections company saying their trying to collect a debt I owe to a telecommunications company. This Easy Form helps you make a letter to tell a collection agency that a debt is exempt from collection under federal and Illinois law. Ensures payment of debt. Maintains the City's letter of credit portfolio. Under the Fair Debt collection Practices Act (FDCPA), I have the right to request validation of the debt you say I owe you. I sent out your debt verification letter to the collections company.