Pat,
Lots and lots of people are facing this problem everyday. Perhaps these callers use a dialer system that has some technical problem or they intentionally do not remove any information from their database.
W/e, are you sure they are contacting you to collect some debts? You have mentioned that your name and address is not in their database. So send a cease and desist letter through CMRRR. Keep these records safely as the evidence of your correspondence.
Try to file your complaint with FTC or Consumer Protection Office of your state. Do keep us updated on this matter.