Nowhere near as bad as most of these, but when I was in my early 20s I had been out with friends, on the way home, quite late around 3am, I stopped to get food and a man (who I thought was working) in the cafe started talking to me , he was much older probably late 40s+ and I have always looked young for my age so could have passed for being much younger than 22 that I was. Anyway I left and walked home, felt someone runnning up behind me, I almost had a heart attack of course, anyway it was this man. He started talking to me as I continued to walk, there is obviously no one around at this point, the street was a mainish road but totally empty, I wanted him to leave me alone but I was trying to be polite. I didn't want him to know where I lived but at this point I was almost home and I couldn't really go anywhere else anyway.
We got to the front door of my building and he was asking for my number, I gave him a fake one saying that my phone was off. He rang the number, the phone of course was not off, he started getting angry, why had I given him a fake number etc etc, went to grab me, I had no idea what to do at this point. By absolute miracle the front door opened and two of my neighbours came out, I ran in and slammed the door before he could follow me. I really dread to think what could have happened.
Another time I was at a street party abroad with another female friend, I think we were about 19/20. She was wearing sandals and stepped on a broken glass and ended up cutting her foot very badly, we went in to a bar to see if they had antiseptic etc. A man there who we thought worked there said he lived hearby and could help her clean it up (in retrospect I realise this is totally stupid but we were both pretty drunk).Anyway the streets are FULL of people and he does live almost just above this bar. So we went into his flat, he gives us plasters etc and she bandages up her foot, we were thanking him and about to leave and he was trying to persuade us to stay, we started making excuses and suddenly he lunged at the door, which was slightly ajar and was about to close and lock it. I have no idea how in our drunken states but we managed to grab the door first and prise it open, running down about 4 flights of stairs as he tried to chase after us. Even now thinking about it I feel physically sick.