My friend have gotten shady phone call just about this. It's from out of state as okay. What should we do?!
Answers:
I'd start by contacting the email portrayal provider's Abuse Team.
But unless you can prove it be done to be unpleasant or to commit fraud, it's probably not private. Someone else near indistinguishable dub, for instance, have every right to use it.
Good luck.