Just found THIS on WhitePages.com:
Scam or Fraud; Flagged as Scam Or Fraud
(803) 552-9217, Brian E Hamilton
Level 3 Communications VoIP, Aiken, SC
The aerial view appears to either be an apartment complex of a small office complex.  They call frequently & never leave a message. (I ALWAYS let my answering machine answer due to so MANY daily calls/hang-ups!)

Called. Left no message. Do not recognize the number. Nuisance!

Call my cell but never leave a message. Do not answer calls that I don't recognize the number due to receiving too many now. On Do Not Call List but doesn't seem to work now.

Calls, hangs up

This a scam like Rachel . Block this number . This a spoofed line that comes from India