I received calls from 207-475-8812 twice a day for the past month. I never answer it because it is an unfamiliar # and they never leave a message of my answer machine.

I got a call, not on this caller ID,it was 000-000-0000;  and it was about reducing credit card interest rates.  It was:
Mutual Consolidated Programs
1-800-943-3250
www.mcsprograms.com

Have received calls from this number about every two weeks since November 2007. Recorded message says from credit card offers. At end of pitch says press 2 if you want to get off their list. Voice then says "your number has been removed." Obviously nothing stops the calls since they call every two weeks. Also same recorded message and same scenario from 207-406-2816. Again pressing 2 does does not remove me from further calls. Yesterday 2/18/08 from 207-406-2816, today 2/19/08 from 207-405-1210. No results from reverse phone search on White Pages.