I don't answer it. They don't leave a message.

This # keeps calling just about everyday and they do not leave a message, added them to my block list!!

They called, I didn't answer, went on here to look up the number, nothing came up so I figured it was a legit cell number, called back an operator answered, asked if I was calling back, asked for my name and address, said she was with GMC Credit and was going to transfer me to a rep.
This is shady because I don't have nor did I have a credit with GMC.