they called a bunch of times! and it beeps!

It is coming from a fax server of eFax.com.

Received four calls from this number today on my cell phone. At first I did not answer because I did not recognize the number. They would call back in 3-5 minute intervals. I answered on the third. No one was on the other end, there seemed to be no connection. i called back and got a msg "the line is not in use" WEIRD!

They are calling my cell phone!!  Called 5x's in past 5 minutes!!

I start getting calls from this number every other Wednesday.  I answer, I get the beeping...I don't answer, I get beeping on voicemail.  When I happen to be off work my phone ringing drives my co-workers crazy.  Anybody know to whom I should report this?