I used to get them all the time, but because I tortured the callers, I got put on the Do Not Call list. Do not try to be polite. If you find yourself on one of these calls, responses like: "That's not, in fact, true", "You really have no idea what you're talking about" and: "Tell, me, how do you look at yourself in the mirror in the morning?" work like a charm. I think of all the desperate people out there sharks like this are swindling, and it just burns me.