To sum it up:
- My mom and ex-step dad have been divorced for over 12 years.
- The jerk has been using my grandmothers address and phone number WITHOUT permission.
- I know for a fact he has relocated (as the mobile home is gone and the lot is vacant). I also used to run into him at the supermarket, and have not run into him and his wife in atleast 4 years.

Anyway: For a while, mail (specifically, credit card bills and credit card aps) were being delivered to my grandmothers address. I always wrote "Return to sender, no such person at this address" and plunked them back in the mail.

For a few years, we have not gotten anything.

Now the debt collectors are calling again, daily.

Is there anything I can do to get these people to stop calling? I've told them his last known address, and that he never lived here, and that I have not seen him in years.

Thanks in advance.