Official Response from DirectBet :
The proceeds from your winning bet was used to cover 3 other losing bets that you placed which we ended up not receiving because they were double spent. You double spent them on purpose after they lost in order not to pay for them.
Furthermore, you sent this bet transfer with low fees on purpose in order to double spend it if it loses.
We posted all the relevant information in your Bet Status page. Here is one of your double spends :
https://blockchain.info/tx/682844bcedd6600ab74ee12b188e5945b13d039818b6b7ee3d960aaa7c71b51b
By placing this bet on our website you agreed to our terms and conditions, which state the following :
By placing a bet at DirectBet you agree that in case of any dispute DirectBet decision is final.