Who called from 5209170372

This number came through on my cell phone and the lady asked if it was me and i answered with yes.
The number is 520 area code and believed it to be a new customer of mine in the area.
I asked who was calling and she said Shannon with Dr Roberts office , i ask what doctor and she hung up.
I tried to call back and got this is a non working number !!!!!!!!!!!!!!!!! Go figure

this number has called several times and does not leave a message only after about 3 or 4 rings, since I have caller ID I do not answer

received call from this number. No message left. Tried to call back. Not a valid phone number.

I have received 3 calls from this number today
The first time I answered and had a bad connection - they hung up, 2nd & 3rd time, they did not leave a message and just like everyone else when I tried to call it back it says it is a non working number....

They called me from this number today and asked if it was me I replied with a yes and they humg up. Called back and it says its not a working number