I have recently started teaching English language. I'm teaching first-year university students. The class is very noisy; students do not stop talking to each other. I keep screaming `and sending some students out of the classroom. I also tried to stop talking until the noise stops, BUT nothing is working. I even gave them seat numbers, but they keep changing their places. I'm depressed and I do not know what to do to control the class. I think that one of the reasons is that there is no age difference between me and them. I'm only few years older.