Who called from 9706805000

Received call and didn't answer.  They left no message.  I called it back and got an "All circuits are busy now, please try your call later" message.

This person called me while i was in class also.

Got a call answered it by mistake as I was on bluetooth. It was an extremely realistic recorded voice system with voice recognition. It was a woman's voice and it sounded at first like she was cutting out but it was the voice recognition software determining what I was saying.After she perfectly repeated her self regarding low interest rates on a mortgage I mentioned she must be a machine and she apologized for not coming in clearly, then continued again.
DAMN though at first it sounded really realistic. 970-680-5000

Got two calls from this number today. Machine answered, no message left.

Calls and calls and calls without leaving message. My phone number is on the "no contact list" but it doesn't seem to matter to this caller.