I have given up trying to contact Airbnb. After my credit card showed usage in London at a host site, I attempted to log onto my Airbnb account. I found someone else’s picture and information on my account. I was only able to see this by backtracking through previous bookings. I contacted my credit card card company and had to get a new card. I was never successful in reaching Airbnb. It took a while just to find a number to contact them and then I was on hold for over thirty minutes. When the representative answered I didn’t get a dozen words out before we were disconnected. I tried a couple more times but never got a response. I found another booking made in France by this same hacker. I sent a message to the host but because I wasn’t able to log onto my account, I do not know if they ever responded. It has been eight or nine months since this happened. I tried today to get into my account but because all the information has been changed, I cannot even change the account information back. I won’t be using Airbnb ever again.
Try reaching them via their Twitter account you normally get a prompt response.