As soon as you know your guest is breaking your house rules, you can ask Airbnb to cancel the booking. If you do so, it's likely you won't be paid. @Carole212 (I am presuming here you asked the guest to pay for the additional guests and not to break your rules around night time noise and the guest hasn't done so).
Personally if guests turn up with additional guests on check in, I ask them to pay (if I have the space) if they refuse, I would call Airbnb straight away rather than let them stay.
If you have tenants rights after 30 days, then you should set your listing not to accept bookings more than say 28 days.
If you feel your property is at risk, they won't pay for the additional people and are breaking your house rules around late night noise, call Airbnb and ask them to cancel, so you can hopefully get your place rebooked.