I have been called multiple times by this number and no one ever answers back.

They've called the last 2 days. No message left.  I called back and the number is not in service.

They called me two this week.  I answered call, they just hung up. Called back the number and it says not in service.

They call my cell phone and it sounds like a boiler room operation. No one says anything so I just hang up.

Answered call, someone said hello, then hung up. Sounded like a telemarket farm in the background. Called back the number and it says not in service.