@Ikon1 Airbnb doesn't have an "email address". You have to use the messaging on the site. It really isn't that hard, although it takes a couple of minutes to get to the "contact" message box. But once you've figured out how to get there, it's pretty quick. I usually get a response from CS to a message pretty quickly, although sometimes it can take a day.
I understand the issue with not being able to call internationally, I can't use the toll-free numbers to the US from where I am in Mexico- the phone system doesn't allow calls to toll-free numbers outside of Mexico. But the time zone difference has nothing to do with the calls- there are CS reps available to talk to 24/7. Most of the calls are routed to their call center in the Phillipines anyway, which would be closer to your time zone than the US.