@Tina6782 Unfortunately, yes. As another person said they will get refunded for the nights in which they didn't stay. Is this fair? Absolutely not. If they damaged the property in any way as a result of the party you can make a claim for that, but if the home is ok, you will just have to count your losses.
I went to look at your listing, but it looks like it is no longer there, so I can't really comment on whether the wording accurately reflected the rules. The best thing you can do moving forward is just be as upfront and clear as possible with guest. Keep in mind, a lot of guest don't read the rules or the entire listing, even though they are agreeing to things within it. I always ask them to please review the rules in my welcome message, then when I greet them, I again reiterate the important rules (Only guest in the booking are aloud, no smoking, etc) This seems to help quite a bit.
Hopefully things go better for you moving forward. Happy hosting.