I love to get those calls. I stop their pitch and tell them how lucky I feel because I need them to check out some suspicious activity or control speeders on my road, yada, yada, yada... I don't give them a chance to get a word in edgewise. When they finally do, it's always to tell me that they are not the police. I follow that by asking them why they didn't tell me they were a scam in the first place? ...click...hmmm... I'm really starved for entertainment.
And when I get normal telemarketer calls, I ask them for their drivers license number, social security number, telephone number, address, kids names...what fun!