We had a very persistant insurance group calling us every night at dinner time about 10 years ago. One night we were having a Halloween party and one of their people called. One of our nutty friends got on the phone and not only listened to the guy's whole spiel, he asked questions. Then he confessed he wasn't my husband, that he was a party guest who happened to be dressed as Goofy and the bean dip at the party was really awesome, the guy should really drive on up and join us. The salesman started laughing so hard we could hear him through the phone. They didn't call again for years. Now we're on the no call list and we only get calls from companies we've done business with. If I don't want their calls I just tell them I'm making an official request to be removed from the call list and so far that has worked.