Who called from 2813016234

I received a call from this number on my cell phone this morning.  When I answered, there was a couple of seconds of silence, then a hang-up.  When I called back from a different number, I got a "number out of service or has been disconnected" message

called at 6:54am.  Hung up when I answered.  Called back to a disconnected number.

Just keeps calling. I am on the do not call list but they dont seem to care.

Just got a call from some foreign guy asking for a Kerry. When I told him he had wrong number he asked for my name. I said none of your business and hung up. Sounds like scam to me.