About once a week...doesn't leave message

rec'd a call from this number on my cell ?? who is this ???

This guy calls or this girl, today this guy called from this number and asked for a Mark Crane. Does anyone know what this means? I too called immediately back and was told the number was disconnected, and I also called the phone company for a reverse and they said it wasn't listed and that it was probably a cell. But, I am always getting calls for a Mr. Mark Crane from all over the place. What do I do?

I just received a call from this number about extending my auto warranty. When I asked for his contact information so I could call him back, because I am at work and don't have time for this, the guy was VERY rude and hung up on me! I get calls from this number every week. When I try to call it back, it just rings and rings.

received a call moment ago, and when I call back, the message says the number was disconnected or not in service.