Who called from 6013012280

Had to say hello three times and then a recorded computer generated voice said "Goodbye"  What is with that?

Immediately after saying "hello", computer said "goodby" followed by a loud shrill noise

tired of getting calls from this number

I picked up, only to hear a dialtone.

Called while I was on the phone, I didn't answer.  I called back to hear this message:  "The Google subscriber you have called is not available.  Please leave a message after the tone."  Wth?