Get StartedThe purpose of this letter is to respond to a demand letter sent to you by a creditor regarding your account, promissory note, or agreement. This is your opportunity to explain why the demand for payment is incorrect. You might explain, for example, that the balance is incorrect, a discount was not honored, payment has been made, or the invoice was never received because of a change in address.Your rights as a debtor may be governed by the Fair Debt Collection Practices Act and your state's own collection guidelines. If you have any questions about the applicability of these requirements to you, consult your lawyer.Attach copies of returned checks, payment records, and any other documentation which supports your claim that the balance as stated in the demand letter is incorrect.