Who called from 5134079308

I received a call but just silence on the other end.  I called back and was told "this call can not be connected"

Same here.

Same happened to me.

Same happened to me.  Called at 5:11 am.  My toll-free office number forwards to my cell when the office is closed.  Can't call back.

I've recieved 4 calls in a row from 4 different spam numbers. This is the latest.  It's like a robot program trying the same numbers with different area codes.  Truly annoying