@Jessie100
I am sorry you had this experience, but if your other guests have been fine, please don't let one bad one put you off hosting.
However, you really can't include kitchen useage in your listing to attract more views and then deny your guests the use of the kitchen after they arrive. Your guest is totally right that this is 'false advertising' and I can understand why he is not willing to accept this and wants some sort of refund. Do not overpromise and underdeliver! I think you have been very lucky not to have problems with this before.
If your kitchen useage is restricted to the use of the microwave and toaster oven then specifiy this very clearly on your listing and make sure that guests have understood all of this before/when they book. Likewise if it is a non-smoking property, did you specify this on the listing? If not, make sure you do in future. Don't ever assume that a guest can read your mind or just that what is obvious to you is obvious to everyone.
Now, it is not cool that your guest has been eating other people's food. I've only had one pair of guests do this early on in 2.5 years of hosting, but I have had other guests who have asked me what food is included. So, I make it clear on my listing that I only supply tea, coffee and sugar (although I do give them a few extras which aren't advertised) and I show them what is there for their use when they arrive.
If there's anything else they need, they usually ask, but it's just stuff like salt and pepper, oil etc. which I'm happy for them to use. I also don't mind them using my condiments and things like butter, as long as they don't use other guests' stuff. Your guest should have asked first, but there are really bigger things to get upset about than condiments or a bit of butter if it's only the occasional guest using them. It' not fillet steak and champagne!
Now your guest should not be threatening you with a negative review, so you could report this to Airbnb as it's against their rules, but you would probably need to have this in writing from him on the Airbnb messaging system, rather than just verbally. If you don't have that, then send him a message on the system explaining that it is against Airbnb policy to use the threat of a bad review to get a refund.
I tried to include a link for you to the policy but the site is being a bit glitchy right now. So, if you can't find it yourself, you could paste this in the message:
What is Airbnb's Extortion Policy?
Reviews are a way for Airbnb guests and hosts to share their experiences with the community. Any attempt to use reviews or review responses to force a user to do something they aren’t obligated to do is a misuse of reviews, and we don’t allow it.
This policy applies to situations including, but not limited to:
- Guests threatening to use reviews or ratings in an attempt to force a host to provide refunds, additional compensation, or a reciprocal positive review.
My advice to you, if you want it, is to chalk this up to experience, carry on hosting, but make your listing crystal clear and make a point of doing a welcome tour where you show them what is and isn't included.