So you deposit 0.5 BTC, lost that because of a "betting bug".
3 days later, you deposited 2 BTC, lost that again because of a "betting bug".
5 days later, you deposited 1 BTC, lost that again because of a "betting bug".
One month later, you deposited another 1+ BTC in 10 transactions, but lost again because of a "betting bug".
Why would you keep depositing when there are so many bugs? How about you offer some more information about this betting bug?
It's true that the admin seems pretty inactive though, and that's not acceptable for real support questions or real delayed withdrawals. But in your case I don't see what the problem is..
edit: okay, so according to the Coinichiwa thread, you didn't receive your 0.3 BTC withdrawal yet. This is not clear in OP to me. Still I think you didn't even wait a day before making this accusation, so I would suggest to wait a bit longer and see if you get it. I am personally pretty sure you will. Keep us updated, obviously you deserve your withdrawal. And let us know if you have some details about this betting bug.
Nobody will ever receive them, because some deposits were fake txès due to malleability issue. Look closely, I have tx`s with 0 confs. ALL deposits must be confirmed to get your cashouts. But those tx's don't exist anymore.