I live in uni halls and find it hard to sleep through the noise! What to do?

I am in my first year of a teaching degree which can be quite intense and I am coming up to my placement block, which means long days. I need my sleep. I have rang security a couple of times, but the other night there were people in the corridor, at 3:30am, talking about the fact that people need to get a life and be normal students and stop ringing security! Now I am too scared to ring!