<< 2. tell them you are a business (don't have to answer the phone and say "Pizza Hut") but when they ask for someone just say... oh... this is XXXXXXX contracters (make up your own business)... they'll put your phone # on a list of businesses and they won't call back >>
Being on a list of businesses is almost worse. You'll get calls from all kinds of people wanting to sell you advertising.
Sometime actually try this, but stay on the line. They don't wait forever, in fact, I'd guess they're supposed to wait 2-3 minutes MAX w.o someone on the line before they hang up. Back when I was younger, I remember getting a call from a telemarketer when my dad was out mowing the yard. I set the phone down, ran out and got him, and by the time he got back, they had hung up. Probably wasn't gone 5 minutes total.
Of course, that's 2-3 minutes they can't bother anyone else.