By the sounds of it, you're on the wrong course. If you don't find it intellectually stimulating then I doubt you're doing it right, or they're doing you right. They don't sound like good communicators for a start.
Have you ever considered transferring your credits to another institution/course and being a bit happier? You'll be less likely to be sitting resits if you're happy on the course, feeling like you're going somewhere.
In the meantime, if you aren't going to jack it in altogether, which would be a shame after all this work so far, in the meantime it's imperative that you save this year just gone. I'd make a very loud noise at the Union, be ultra-efficient and turned-out, but baffled and confused and angry at the way you've been treated. No-one, it appears, has written to you, or spoken to you personally, despite you being told exam timetables would be sent to you. Having a phone shouldn't be a prerequisite to education, and academia is notoriously poor at administration and personalised service. Why shouldn't someone write to you personally, you're paying thousands for the course!?
Can you save the pages of Wolf, to show there are no timetables there?
Save all your emails (don't delete any stupidly!), and any between you and the Union.
At the very least, start knowing your rights as regards exclusion from the Uni, so you can be prepared for the worst, including impact on fees, loans, any grants you might get, etc.
There's bound to be some scepticism here about your role in missing the exams, but that isn't very helpful right now. What I would say is (having been exactly where you are, in the sense of drifting into shit with a Uni) is that if you do manage to salvage the day, it'll be an annoying slog of interviews and cajoling, and explaining, and forms, etc. And then when they let you back on, you might look around and wonder what the hell the fight was all for, because you're just as unhappy as you were before the shit happened.
