This letter only gets sent if your creditor/collection agency replies with what they consider "proof" of your original signature and obligation to pay. Ensure to wait until the 31st day from when they received your first letter, then check your credit report to make sure they have not marked the item as "disputed". If it is not marked as "disputed" in the comment section, we typically proceed ahead and send Part 1 Letter 3. If it is marked "disputed" then proceed with Part 1 Letter 4 or Part 2 Letter 1 it is your choice.