If you're scammed you wont' get your $ back

Guests who make the serious mistake of going "off the Airbnb system" to contact a host (this begins by contacting them via their private email rather than thru the Airbnb messaging system) will not be reimbursed for their losses to these criminals.Airbnb states clearly that users are not to go outside the system, yet too many dont' understand the reason for that, or even how it happens, and they contact other users through private email, and then pay via bank transfer after getting a fake email that seems to be coming from Airbnb, asking them to do so. However Airbnb NEVER will request anyone pay by bank transfer or wire transfer!

www.theguardian.com/money/2017/may/08/conned-by-fraudster-airbnb-host