I have started hanging up FIRST, the second they say the word warranty or ask about my vehicle, I just hang up first, that's what they are going to do to you the minute you say no.
Same sorta thing - constant calls on a car that was "TOTALED" three years ago. Told the moron to send the paperwork to the moon - he took that rather poorly and hung up. Can't wait for the next phone call as now it is more fun to mess with the idiots (if only I could do Danny DeVito's voice). I should tell them the car needs fixed and send them a chunk of metal from the junk yard. Idiots, idiots and more idiots.