The wimps laugh at you cause you get frustrated. The best way to frustrate them is to ignore them and block their numbers. Everyone should do the same, and then they'll end up getting frustrated. Who cares if they laugh or not, just ignore them. Giving them attention will waste your time. But if you have time, curse them out, play around with their heads, and waste their time.
I have been doing the same but to our city prosecutor. If I get one that wants to schedule an in home estimate I have the local police station address as well as the # and address for the county lockup. I like your idea too. I should see if our local congress rep has a phone # in the same area code.
Now they are saying they are called Security Technologies... Same garbage different voice on the recording. When I spoke to the lady that identified herself as Tammy I greeted her and said This call is being recorded. She immediately hung up.
I am on the phone right now setting up an appointment with the security company that is using this telemarketing service. Nationwide Security, Wonder what company the tech will name tomorrow. Once I get the Bona Fide information from the local contractor, I'm going to demand $1,400, that's $50.00 per call for every call that I have received over the past two weeks. If they don't pay, its treble damages in small claims court. Our local judges rule against these telemarketers as a matter of routine. I have made a decent bundle of money lately by this tactic. Don't block, don't get mad, GET PAID.