The girl does have a 601 area code phone number. Sounds like she's been local for a while. Maybe she is from up north somewhere, but that seems questionable.
Sorry for your experience. Something similar happened to me years ago during a session north of County Line, too. The guy pounding on the door was insistent, cursing, seemed to be a husband or boyfriend.
The provider was fairly well-known. She was on top in cowgirl, getting off on it all. The more he yelled and cursed, the harder she rode. But I understandably lost interest, both with the little head and big head. I stayed in the hotel lobby about an hour before returning to my car. We do not need this kind of drama.
