@Rene2450  Simply put, you need to keep in mind a few things that may serve you well in hosting in the future.

1. Never write a defensive 'War & Peace' length response like you did with any guest. Makes the host come across potentially 'combative'. Dismiss such 'lunatic' reviews in short order, but even better do not even get into such a host-guest combat situation in the first place by taking this approach >

2. When a guest arrives with an attitude that one's place is not for them, for whatever reason, it may simply be a situation that to go any further you are then trying to force a square peg into a round hole - it is not going to work. Accept it and move on, you were better off not hosting these people, cut your losses and if the deal (there usually one) is they be refunded and everyone goes their merit way (quietly) is oftentimes the best outcome. Fair or unfair is beside the point. Of course, for your benefit, do consider the why they feel that way and maybe, just maybe it has some merit.

Good luck.