Who called from 7247417000

I get this call every week, usually Thurs or Fri, sometimes late in evening. Always a fax tone.

Receiving calls at my place of business from 724-741-7000 and when I transfer it to my fax nothing happens.

Started getting this call today (Friday, April 11, 2008). Fax machine tones.

Call comes in from Pennsylvania.  I will file complaint soon.

I keep getting multiple phone calls from this number. It is just a fax tone. I want it to stop. How do we stop it? Who do we contact. If so many people are having problems why is there no answers?