Unknown call

First time I got this call was this evening (5/10/2012).  Somewhere out here in Colorado-did not answer.  No idea.

Called last night. Claimed to be charity.  Asked to be put on do not call list. Claimed they were exempt from do not call.

This number, 970 472 1497, keeps calling, late at night, after 830, have asked to talk to supervisor, and to be put on do not call list, but they just keep calling, and asking for the people who had my number before me, apparently its a food store, but said they were trying collect money on a car note.

This number keeps calling and my Caller ID shows Town & Country.