I've been getting these car warranty calls on my cell in Canada for the past 6-8 months. I just play with them and waste their time; gives me a good chuckle.
I had anther telemarketer calling trying to sell me doors and windows. I told him my house doesn't have any doors or windows. He asked me how I got into my house and I told him "through a hole in the ground". Classic silence on the other end.
Got a call yesterday telling me I had offered to donate clothing and a pickup was scheduled for today. Told the lady she must be mistaken as "I don't wear clothes; I'm a full time nudist." She didn't know how to respond
It does suck when your in the middle of something though.