Who called from 3868685058

I just received a phone call at 10:24 am.  No one responded.

Receiving calls from this number. No one on other end when answer. Call back and states mail box is full. I'm on the do not call list and work nights. These calls are waking me up and VERY irritating.

Silence when I answered the phone. I am on the Do Not Call list

Second time call from this # and no one at other end.

Just number on caller ID; no name.
Think I've seen it before but have never answered it.
No message left.