Guys, you have to understand that even if you had a start date, nothing would have changed, there is no communication.
My joining coordinator pretty much never replied to my emails.
I only got my work visa (the one you need to have when you arrive at the airport) the day before coming, and because I sent many emails.
It's just the way it is.
You have to realize that things are different here, it's another way of doing business, get used to it because it's just the beginning. Patience is the key