Changing to Exeter

The course doesn't appear to be in clearing, (I'm assuming you're a Home student?).
https://vacancies.exeter.ac.uk/clearing/home/
1) You can give their clearing line a call to double check, (it probably won't be if their website is up to date)
2) Ask if you can speak to Exeter's admissions team, (not the clearing line). Let them know you were an insurance oferf holder and met your requirements and see if they might still be willing to honour it anyway.
3) If they say yes, only then do you need to look into accommodation.

The course doesn't appear to be in clearing, (I'm assuming you're a Home student?).
https://vacancies.exeter.ac.uk/clearing/home/
1) You can give their clearing line a call to double check, (it probably won't be if their website is up to date)
2) Ask if you can speak to Exeter's admissions team, (not the clearing line). Let them know you were an insurance oferf holder and met your requirements and see if they might still be willing to honour it anyway.
3) If they say yes, only then do you need to look into accommodation.

The course doesn't appear to be in clearing, (I'm assuming you're a Home student?).
https://vacancies.exeter.ac.uk/clearing/home/
1) You can give their clearing line a call to double check, (it probably won't be if their website is up to date)
2) Ask if you can speak to Exeter's admissions team, (not the clearing line). Let them know you were an insurance oferf holder and met your requirements and see if they might still be willing to honour it anyway.
3) If they say yes, only then do you need to look into accommodation.

Had a talk with the admissions team and there's nothing that can be done now. I'll need to think if I want to leave my current course and apply next year or not.

As least you know for certain and aren't rushing around trying to sort out suitable accomodation.
If you need time to consider your options, you could always ask your firm choice uni if you can defer. If you decide to reapply in the next cycle you can ask them to release you so you can make a new application.

So long and short of it is that I ****ed up. Badly. When making firm and insurance choices, I had Exeter and another university as pretty much equal, but the other one had higher entry requirements so I put that as first. Over the course of time, I did more research and decided I prefer Exeter, but I'd see what to do on results day.
Come results day and I get into my 'first' choice and see that means I've automatically declined Exeter. At the time I was just so glad to get in anywhere I decided I'd just accept it, move on and try and make the best of it as I doubted it'd end up being bad. Had doubts about doing that but I doubted my doubts and decided to not talk with the people in my school when I could've.
And now I had some stuff happen to me that's reinforced I want to go to Exeter instead of there, but I don't see any way out at all. My school's now properly broken up so I have no-one to contact there and I'm not sure who to contact at Exeter, and even if changing is possible now that I see accomodation is being allocated and I have disability needs that would need to be met so I'm not sure I'd be able to get what I'd need. Or even how I would communicate this with the university I'm currently set to join if this ended up happening. And I'm not even sure how I'd go about this which is I guess the reason I'm posting here.
I'm just extremely worried I messed up by waiting too long.