Wtf should I do?

I placed this bet, that happened to be available after a penalty was conceded. This is not certain money as the guy could have missed the penalty. He ended up scoring, and I got my money! Then after a while I check my account and they simply stole EVERYTHING!! what should I do regarding this??,

I placed this bet, that happened to be available after a penalty was conceded. This is not certain money as the guy could have missed the penalty. He ended up scoring, and I got my money! Then after a while I check my account and they simply stole EVERYTHING!! what should I do regarding this??,