Who called from 2815450307

Received a call on 10/14 and 11/5, both times they left no message. I don't answer calls from numbers I don't know

called cell, no message

Wants to sell an extended warranty.

It's a phone call from a company who wanted to sell me extended warranty.
when I asked them if they worked for the automaker, they got extremely defensive
they said "HEY!" to interupt me. When I stopped talking they said "have a good day.." and hung up.
Obviously, they aren't with my auto maker.

I also just received a call from this number. When I answered, they hung up. However, I never call those type of numbers back. It showed "SERVICE CALL" in my caller Id.