I was a bell ringer and trust me, it is HARD work. 5.5 hours is blatantly an exaggeration, even for national celebrations like a Royal wedding. It’s never that long.
There will be bell ringing before a service on a Sunday morning, but again, not for the length of time you describe. It stops when the service starts.
There is bell ringing practice one evening a week, and again, nowhere near the length of time you are quoting.
Other than the odd wedding, that’s about it.
I think rather than focusing on the bells you need to focus on your perception of them and handling of it. Scale down the hours you quote to a realistic amount of time, get headphones, find something else to do while they are ringing.
Your problem is really something else, not the bells, or you wouldn’t be in a hostel. I hope you get things sorted and back on an even keel.