Mystery Solved. These calls are NOT coming from The Heritage Foundation. They almost certainly originate from telemarketer The Heritage COMPANY. http://www.theheritagecompany.com/
Had a call around 9:20 P.M. from 323-330-1426; fellow identified himself as 'Joe Blow,' and had been given our telephone number and was calling about U.S. Bank; asked him to repeat .. which bank? Sensed it was a 'fishing expedition,' and told the fellow I had no interest in talking about ANY bank and hung up.
Interesting to learn that others have gotten similar calls from this 323-330-1426 number.