Who called from 7204520078

I get calls from this number early morning.  It is a fax machine calling.  If you call back it is always busy.  Driving me nuts - 6:30 a.m. 7 a.m....Any ideas how to make it stop?

I get the same calls from different numbers in the 720 area code.
Sounds like a Fax machine also. Hope it stops.
Have you gotten a response from anyone else ?

I've been getting numerous calls daily, from the 720 area code.
It sounds like a Fax machine. Is there any way to contact these people ??

I don't know who this is calling from this number and I don't care!!!! I just want it to STOP!!!!! It's 11:00 at night and people are trying to sleep!!!! Where there is a number there is a trace my advice to this number is please stop!!!! I will take legal action!!! Fax or not fix the problem and discontinue the unwanted calls!!!!!

Call from a fax machine.