Who called from 7206067110

Called 8:30 in the morning! It was just FAX machine beeping! SO ANNOYING!!

It was a fax machine beeping at me.

Calls started at 5:45 AM 15 minutes apart

I would like to know who/which company is calling my house number from that phone number. It calls and leaves a fax-machine-sounding beeping sound, beginning at about 11AM. INCREDIBLY DISRUPTIVE!!!!!!

This number called twice at 6:55 AM, fax machine sounds both the times. How do we put an end to this? Should we fax them a complaint? Or send them meaningless faxes? Can we call the police in Colorado, can they do anything?

Will my phone company help?