Whoever it is keeps calling and says nothing then hangs up.  I called back and was put on hold and then hung up on without ever getting to speak to anyone to tell them that I am on the do not call list.  I wish these idiots would get a life and quit aggravating people with their nonsense.

I got a call from this number and called it back *67 from my cell.  It stated the following:  You have reached the corporate offices of the National Auto Division.  
It went on to describe how they might have packages available to help with the maintenance and warranty on your current vehicle. It's bunk.  Don't answer it, unless of course you're interested.

They keep calling and hanging up.

Telemarketers

Caller stated he was calling about my auto warranty.  I asked him to take my number off of their list and to not call me again, as this is an UNLISTED number.  He responded "then why are we calling you?"  I said I don't know but I wanted to know where they got my number.  He said "when you bought your vehicle."  I have NEVER given out this phone number to anyone!  It was a free number given to me by Time Warner Cable as part of a package, we don't use it.  He became very much a "smart a$$", very unprofessional.  After several rude comments by him, I asked for his supervisor, to which he responded "fine, bye" and hung up on me.  Something needs to be done about people like this!