why don't you try contacting them first instead of exposing the issue publicly?
Just like when you have an issue with a bank you don't run to the town square and shot I have a problem with the bank. You have to be an adult and goto the institution as they are most likely the ones that can directly help you.
Of course I did. From my OP:
I hope they fix this nasty bug and give my coins back. I sent an email to support team but still got no response.
I finally got the confirmation email re-sent but it was a bug since I could not see and pending transaction in the withdrawal section, so I could not re-send email or cancel it.
Now it's fixed. Thanks a lot.