Who called from 6016331151

This number called me 7x yesterday. When you try to return the call you get a recording that there is no such number. If you answer there is no one there.

I am getting calls from this number as well... When you try and call it back it does not even ring.

I just got a call from this number.  Tried to call it back, and it does not even ring.  Something needs to be done about this.

Called our house a little after 3. We did not answer and they did not leave a message. We are on state and federal do not call lists.

I get this number calling me all the time saying it is NICK and my business qualifies for some loan. I hang up and try to call back and never even rings! I am on the Do Not Call Lists!  How does this happen and how to stop it!