Who called from 7203157900

I don't answer strange numbers.
They called and left no message. If it was important they would have left a message...
So I didn't return the phone call.

I receive a call from this number and didn't answer. Its from a Denver area code, that's all I know, and they didn't leave a voicemail so it obviously wasn't that important.

Called my cell.  I didn't answer.  Don't know anyone in Denver.  My cell is a prepaid by minutes.  I have been very disgusted with the constant robo,political, charities and plan old scams that use my home phone.  Got a cell phone to get away from all that, but this is the third such call.

Called, left no msg on my cell. If I don't know them, don't pick up.

called claiming to install a free security system. sounds like a scam to me.