unkown caller to me

Called this number back to remove me from the call list and it says "This number is not in service!"  What kind of scam is this!?  These people need to be deleted!!!!!!!

They called me this afternoon. I answered out of spite since it was Memorial Day. The recorded message was about some credit card I allegedly had. I pushed a number to talk to a rep...I was greeted with a live person asking me about my credit card. I cut them off and asked who was calling me on a national holiday...he answered "Barack Obama". WTF? I then told him to take my number out of his list. He then said some thins that I can't repeat here and hung up. Maybe he didn't appreciate having to work on a holiday? LOL

Received 2 calls from this number this morning twice this morning called the number and as posted above "this number is not in service."

Got call from this number did not answer it.  they did not leave a message