I just had this happen to me within the last 20 min. it was a warranty service for my car engine. It was automated and would allow to speak to someone then, about 5 minutes later someone did call me, named Mario from Warranty...couldn't hear the rest. He asked me how was I doing and who was he speaking to. I didn't say my name (DON'T GIVE THEM ANY INFORMATION) but asked what was this about? He then hung up.
My cars warranty isn't about to expire THIS IS A SCAM.