We got a call from this number last night.  We don't answer calls from numbers we don't know.  Oddly enough, they hung up without leaving a message (I know, shocking, isn't it?).  So much for the "Do Not Call" list -- what a bunch of crap that is.

When I get a call from this and similar numbers, I always file a complaint with https://complaints.donotcall.gov/complaint/complaintcheck.aspx?  Eventually someone will notice.

unwanted calls

I have also been receiving repeat calls after choosing to stop receiving calls.  
This time I chose to speak to a rep, and here is what happened.
When the "friendly representative" picked up I stated "If you people call me one more time I will find out where your are."  To which I received the "friendly reply in kind " We have your address"

So, although admittedly I threatened first.  I got threatened.

Now lets shut these guys down.!

this phone number comes back to Cbeyond Communications, LLC - Overall. Their office number is 678 424 2456.  As soon as I mentioned who I was (a Federal Agent) they hung up.