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I got a call from this number Wednesday and then today when I answer they hang up and when I call it back I get a recording saying the number isn't even assigned

Same thing with me. They called me and when I answered they hung up. Then when I called back I got nothing not even a ring.

I got a call from this number today on my cell phone. I was at work, so I couldn't answer it, but they never left a  message.

They identified themselves as associated with an employment agency. I hung up right away. Reverse number identify Joseph Williams Gulfport, Ms the location. I did not attempt to return call.