Bathroom scare

I was in the public bathroom of a Wal-Mart when this guy walks in and acts like the janitor person, asking if anyone is in there. I answer, saying I am, and no one else does. That is expected because I am alone in there. He fully walks in, and says that I need to hurry up and get out because he needs to clean it. That should have been my first sign. A store employee wouldn't be that rude. But I hurry up and as I'm walking out of the stall he slammed open the door and pushes me back in. He losjs the door and I am trapped in this small cubby with this strange man and he isn't being nice. He roughs me up a bit when I fight back, but he eventually gets me pinned to the wall. He has his hand up my shirt and another holding me. He... touches. Then he moves down. I am caught between wanting to yell out and my breath being caught because I can't believe this and I am terrified. Before he can get farther, the door opens and someone walks in. I scream for help and she tries kicking the door down, but can't. I yell for her to get help that the sooner she does, he'll leave. When she left he gave me one last punch before leaving. They never caught him. And no one believed me. Hopefully I can get someone who understands me here.