A hacker got into my booking and is now an added guest to my reservation, what do I do?

[Arnar-And-Grima0]

We're two guests going on a trip to Paris. I booked the studioappartment and then added my travel partner as the other guest, but when I checked the reservation to see if he'd accepted the invitation, another email had also been added, an account that is clearly not real, there is no picture or information on him. I've reported the profile but I don't seem to be able to remove him from the booking. What can I do in this situation, I'm afraid that he can change something or hack my account or anything really. Since he was able to sneek into the reservation without anyone inviting him, he's likely to do anything. Can anyone help?

[Arnar-And-Grima0]

I've figured out how to remove the guest. But how can I report this if it's not a known problem. I couldn't find anything on it in the Help Center. 

[Tracy0]

The fastest way to get a response is to use Facebook or Twitter to get AirBNB's attention and help.  

[Maj-Britt0]

I would also change my password immidiately and contact ABB