Who called from 2486749851

This number has called a few times in recent days and I don't pick up.  Today they called twice and the second time I picked up.  No answer and a computer generated voice ultimately said goodbye.  No idea who it is, as they don't say anything.

Called twice today. Did non answer.

Joe from childsafe...I think that is what I heard over the blood rushing to my head and the steam coming out of my ears.  4 calls in less than an hour.   Tried to call back and got a disconnect message.

They called 3 times in an hour.  I asked to be taken off the call list, they said NO, and hung up on me.

This number called several times in an hour and didn't answer when I finally picked up.