Who called from 5149588000

I have gotten 5 calls from this number today. My caller ID says 'Test Code' and when I pick up it is just a series of beeps.

stop calling every ten minutes

This number calls for the last 3 months and it is a series of beeps like a fax number.  I try to send them a fax back to tell them to stop calling and a recording tells me that my call cannot be completed to check the area code and dial again.  Very frustrating.  Is there anything I can do. Please help

I get many phone calls from this number and when I pick up there is a fax-like buzz.  This number calls every half hour or so -- and it is very annoying.

I have the same problem, they calls every 40 min. Who can help stop this spam???