Who called from 5154739539

I'm on DO NOT CALL LIST and received a call from this number.  When I answered, the line was very garbled and the caller hung up shortly after.  

DON'T call me!

Called me, I said hello, they responded with "ummmm click".  Real professional, just like the rest of mediacom...

I could not get to the phone, was using the bathroom. They hung up before the answering machine could come up.

Got this call twice 12/14/2011 as spam for a "health insurance inquiry".  Caller hung up on answering machine.

They called me like eight times and they asked for me by my nickname, which is NOT well known. It freaked me out! I called them back and they were talking about my "recent health insurance questions" AND IM ONLY 19!!! I DONT HAVE ANY FRACKING INSURANCE!