Honestly if the person who was renting the house from me was getting hostile and everything, I'd treat it like a domestic crime. The cops will solve the situation I guess, probably a court case.
If it is a criminal offense, call them. If it is a civil matter...there isn't anything they can really do for you.
Call them and tell them what is going on.
call the police see if thay can help
...call the police?
Call Judge Judy!