He followed me, blocked my way, and got aggressive

New submission from AA

During the daytime a man in his early 30s on a bike began to try speak to me, I was late to a lecture and not interested so I ignored him and carried on my way and he then followed me and blocked my way, asking why I was ignoring him and that he “just wanted to talk”. After I said that I didn’t want to, he got aggressive, however I backed away from him and he eventually left me alone