You have several options. First, OldDebts will allow you to send additional letter series to the same debtor for the same debt. Second, for a more aggressive approach, the debt can be placed on a contingency fee basis where there are no additional up front fees or costs -- the collection agency is only paid if they collect. Third, you may choose to refer the claim to another collection agency as long as the account has been closed with OldDebts. To close an account, please login to your account and follow the necessary steps.