A few months ago we had a problem with a guest's booking: they had requested a booking for that night and by the time I replied (accepted) an hour later, they had booked into a motel for the night instead. When they got notified that I had accepted their booking, they realised that they were paying for NOT staying at our place that night, and they phoned me - angry that I had accepted their booking. At that point I found a reference on the AirBNB website with an email address that I could contact AirBNB directly - but today I can't find that anywhere, I am going around and around in circles with the Contact Us > Help Centre > Contact Us.
I must say that in that previous incident, AirBNB was fantastically responsive and I had an immediate phone call from San Francisco and they resolved the issue (refund to the guests) straight away, and we didn't lose our Superhost status.
Maybe I'm not looking in the right place on the website for the DIRECT contact point... can anyone help me with this?