I've gotten these calls to, as well as a heartfelt email from one of Mumar Khadafi's widows, something about 900,000,000 in funds that might as well go to me.
I immediately put my resignation in at work. A new one of everything Kawasaki has to offer is also on order.
Seriously, I think they just set up the random or sequential dialers with no regard to any 'Do Not Call' lists.
They may not even be in the country, and who's going to devote resources to tracking them down? Most white collar crime doesn't get much attention unless you really 'Madoffa witha lotsa money'.