@Lee353 Okay, well then you obviously have to get them out 1) before they can claim tenant rights and 2) ASAP before they destroy the unit.
I'm thinking of something like this..
Airbnb:
I am writing about reservation XXX.
It has come to my attention that this reservation is a third party booking, which is not allowed under Airbnb's TOS and therefore neither the guests nor the host are entitled to any of Airbnb's protection.
[cut and paste Airbnb TOS on third party bookings] + evidence of the third party booking.
As you can see from XX evidence, this is obviously a third party booking which is not allowable.
This booking puts the guests and the hosts at risk.
Please provide a neutral Airbnb cancellation for this reservation as soon as possible.
_____________________________
Something like that, which is very straightforward and see what happens.
Your other alternative is to just cancel them and then spend the next weeks and months trying to get Airbnb to open your calendar and remove the host penalties that they will inevitably lodge on the listing.