I received a called from this number and it was silent and then a beep, then an automated voice said "Goodby"

I also received a called from this number and it was silent and then a beep, then an automated voice said "Good-by."  This was the second time it happened and the call came at 8:20 am!

I received a call from this number and a man I could barely understand seemed to be trying to tell me that my wife had entered a sweepstates and we had won one of three prizes.  I could only understand him well enough to understand that it was some sort of travel gift.  He promised to have his manager call me in a few minutes.
The call came at 2:40 PM.  Wish me luck on the manager calling.

Same thing...not answers, just a beep...

I got a "Goodbye."  My caller ID says it's from Grand Island, NY.