Mystery Solved. These calls are NOT coming from The Heritage Foundation. They almost certainly originate from telemarketer The Heritage COMPANY. http://www.theheritagecompany.com/
Since January 4th until today I have received 20 phone calls from this number. Sometimes I received 2 calls in a day. I thought this was " The Heritage Foundation" until I read on this forum that it wasn't. I am an avid supporter of "The Heritage Foundation" but like everyone else I don't like getting soliciting phone calls so when I would receive mail asking for money I would send it back, in their postage paid envelope, with a note, no more donations until your phone calls stop. I went to the yellow pages and looked up "The Heritage Foundation" and the number listed, matter-of-fact there were two, and neither was this number. I know they could be using a special number for their telemarketing calls; and probably are. Since I put their number on call block the calls are getting less frequent; but still coming in.
I received calls from this number around 5:30 pm for the past 4 days. This is getting annoying as there is nobody on the other end of the line. I now look at the caller ID and don't bother answering when I see this number.
If someone continues to call you after you repeatedly tell them to stop, that is harassment which is against the law. Filing with the DNC might be a good way to show evidence that you told the person who was calling you didn't want to talk.