{{{{{{{Erin}}}}}}}
I've been in a similar academic situation.
All I can offer is to find some way to get away from the madness and get some sleep before tackling the bureaucrazy. You are *not* going to get this fixed in the next four days. Resign yourself to that, and deal with everything else going on.
Put all your effort into ignoring it, forceably, and attack the problem next week, when the mess is over.
It may be you can get some satisfaction out of the school, but you won't get it finals week, when everyone around you is freaking like a freaky thing.
Blowing up right now is tempting, but it'll only make your comeback a little more awkward.
Wait. Rest. Bide your time.
That's my advice, FWIW.