Well, every casino reserves the right to forfeit the winnings. But a proper explanation is necessary to forfeit a good amount from the users. It is impressive if you have really won 2.24 BTC from 0.012 BTC deposit. At the same time, it is strange if BetHog team has sent your first withdrawal without doing any review. Even, a well established casino will do some investigations before processing such withdrawal from small deposits. Beside sending your username to 'Little Mouse', you may submit a complaint on Askgamblers. Also, add some evidences here for making your complaint valid.