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.
They have called me previously from this number (Hackensack NJ) and the rude guy I spoke with claimed to be a rep for a warranty company that deals with my car dealership and were calling after my "failure to respond" to previous mail attempts at extending my vehicle warranty. He used pressure tactics and attempted intimidation ("repairs on your model vehicle cost several thousand dollars, I'm a mechanic I would know"). Seriously? A mechanic working the phone lines? These idiots crack me up. Now they call and upon answer it clicks and goes dead, returned call says number is disconnected. Next time they call I'm gonna blare a horn in the microphone.... >:}