Who called from 2086640749

auto warranty call

Answered it and got a recording about auto warranty expiring soon so they want to sell me one.

I did not answer and they left no message, but my caller ID said
Bouffiou G & K. I tried to call the number back but got a busy signal.
Try calling this number it is a do not call list 888-382-1222. I recently moved got a new private number that only comcast and family have. So how did they get my number?

didnt answer. repeated calls from this number

just got that call on my cell.  didn't leave a voice message.  i hate this!!!  Is it better to answer and tell them to stop calling or just never answer?