@Monika64I wish there was an easy way to do it (contact AirBnb immediately). It does seem calling is a pretty labor intensive approach --although I'd do it if I had an actual booking to cancel, but not if I'm getting a 3rd Party request, right? I just flagged the user with no profile info who tried to 3rd Party Book me for the summer. Her lack of openness, language/style of communication and lack of response suggests she's got undisclosed agenda.
In flagging, you get three options only, no fill-in-the-blank "Other" category:
(1) User should not be on Airbnb,
(2) User offers other means to contact, or
(3) Inappropriate content (offensive, whatever).
So I pushed (1) hoping I'd get a second screen with a place to put "requested 3rd Party booking, please advise how to register for Business Travel Manager." Nope, no oppty to add info. Just got "thank you for flagging this user" or such.
I can't CONCLUDE this user should not be on AirBnb, but they are requesting something that is not allowed on AirBnb...
Ideally, AirBnb would simply and graciously invite them to properly register for corporate 3rd Party booking within x time period or discontinue their profile.
Seriously, management would benefit from giving us a suggestion box. Maybe one accessible to Level 10 folks...