Who called from 4123256220

This number calls over and over.  We've tried sending them a fax to give them our new fax number but they continue to call and call.

In the past half hour this number has called my business line over 45 times. And it just keeps beeping. The internet traced it to somewhere in Pittsburg.. wtf?

This number has been calling my business line for the past 2 hours, non stop. I tries faxing it to ask them to stop. Looks like i'm not the only one. UGH!!!!

This number has been trying to fax us for over an hour NON-STOP!!!  Caller ID shows Pittsburgh, PA