Banner Desert Medical Center in the Phoenix area.  Said he is doing a survey.  I declined.  They have called 3 times over the last 3 weeks without leaving a message so I finally answered.  Have now blocked the number.

Let  this caller roll over to my voice mail. Called this number back. The number is answered by an answering system at Banner Hospital X-Ray Dept with the message stating that their number has been hijacked and that they are being overwhelmed by call backs.

They have called about eight times in the last four or five days. I never answered and blocked the call with my phone. However the calls kept coming so the phone would ring once before it blocked the call. I have now blocked it with my phone provider so the phone won't ring at all.

Caller ID only lists Mesa, AZ, there was no message left.

No message left & I'm Not calling back.  Caller ID said BANNER, DES.  I live in Northern CA.