Hi @Lucilla14
Sorry to hear you are having a bad experience.
This was posted a few days ago so I'm not sure if you have sorted it out.
I'm not all that experienced and have not had this happen to me, but from reading other threads, I would suggest that you contact customer service.
You are a superhost so you should get good attention.
If you explain that the guests are making you feel uncomfortable, I believe you have the right to cancel the booking.
I imagine airbnb will reach out to them and make contact first - give them the option to improve their behaviour, but I think you CAN insist you just want them gone. It's your house - you do not have to put up with behaviour that you find unacceptable.
YOu will have to refund them the unstayed nights. They may leave a bad review - but at least it won't be 2 bad reviews - which you might get if your other guest continues to be inconvenienced. If they do leave a bad review you can add a comment beneath qualifying what happened - bearing in mind it will be read by future guests
In your review of them make sure you let other hosts know about their behaviour, in clear factual statements (eg they ignored the quiet time rules, made a great deal of noise, disturbing myself and the other guests even when politely requested not to. I would not recommend these guests... and a thumbs down).
Hope that's os some help
cheers