Hi Stephen,
I think your best bet is to tweet @airbnbhelp and they will ask you to DM your listing and sometimes they will ask you for your email or phone number and contact you right back. I have been hearing a lot of people having issues contacting Airbnb outside of US and Canada but being in Canada, my experiences have been excellent. Give Twitter a try and I believe you may have some success.
Dave
David
Superhost Ambassador ~ Host Club Community Leader ~ Experienced Co-Host