You must realize that whatever their decision is, it's going to be that way. You're there as their paying guest. If you don't abide by their rules (or how they interpret them), you can be asked to leave.

I'm sure if you review your student housing contract, you will see they have the final say on almost any interpretation of all of their own rules. So basically, they can do whatever they want. Sure you can ask for a review, maybe even win you argument this time. But in the long run, you're going to lose. They do not have to offer you a dorm room next year/semester.

Good Luck!
Jim Smith