Scammers are spoofing bank phone numbers to rob victims
It can be a very convincing trick… “You can check the number in your display online sir. You’ll see I’m really calling from your bank.” That is, of course, if you are unaware that phone numbers can be spoofed. Then again, they wouldn’t be successful scammers if they weren’t convincing. If you suggest calling them…

A serial silent caller.
That sounds about right, i didn't answer but i just purchased an ipad and guess its insurance sales then...