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.
I answered as my business, so they hung up without identifying themselves, but the woman's voice sounds identical to the woman that would call in search of donations for some charity. I blocked their old number, but I'm guessing they changed numbers to get around all the blocks.