Who called from 4155061664

Received message from "Julie Smith" from the IRS.

received two calls from Julie Smith from IRS recording.
called number no info just leave a message.

I received the calls as well. I called them back and confronted the man. He hung up on me. I received the call again and called the number back and it says it was from magic jack and this number has not been assigned. Hmmm.