http://www.ffrcollects.com/pages/homepage.asp
First Financial Resources, Inc.
      One Clarks Hill
      Suite 302
      Framingham, MA  01702-8172
      Tel: 508-647-5155
      Toll Free: 800-747-2302
      Fax: 508-647-1557
_____________________
BBB:
THIS BUSINESS IS NOT BBB ACCREDITED.
First Financial Resources, Inc.
Phone: (800) 747-2302
Fax: (508) 647-1557
One Clarks Hill, Ste 302, Framingham, MA 01702
http://www.ffrcollects.com
BBB® A+ Rating
On a scale of A+ to F

You might want to consider a call blocker.  Also, don't pick up on numbers you do not recognize.

Also you can send them a cease and desist letter.

Cease and Desist Templates
http://thompsonhall.com/cease-desist-letter-template-example-sample-forms/

Report them:

http://www.consumer.ftc.gov/articles/0149-debt-collection (Threatening civil proceedings with no intent to follow through, or threatening criminal process in order to collect a civil debt is a  violation of the Federal Fair Debt Collection Practices Act.)  The same goes for endless telephone harassment

Also contact your local attorney general

You have one guess at who cwg40 is!

CWG40 is a regular on this site who gives helpful information to people who may otherwise be scammed.

I guessed correctly. What do I win?

And who might that be?