exam conditions uni

recently I had a mid term for one of my subjects and the exam conditions were disgusting shoulder to shoulder in a full packed lecture hall that was boiling, people were laughing whispering, people smelt it was hell, the persons next to you paper was literally hitting yours when u the changed page, I thought this was just for the 1 hour mid term, turns out the 2.5 hour final exam is in these exact same conditions I'm not looking forward to this I can't focus in this environment, my last exam was for a much smaller class like 60 people and we was in a massive sports hall, I mean huge, but this class with easy 600 people in it are gonna be cramped in are usual lecture hall for this 2.5 hour exam this should not be allowed