They try tocollect on expired debt. Which is expired and if you answer restarts a debt. They buy expired debt to try to collect and therefore try to restart the debt with outlandish fees that you never owed. !!!!!HANG UP ON THEM!!!!!! or get a lawer to stopmpt them in the ground. Go on the do not call list and keep track of the calls you may be able to sue for money for harashment. :)