Kent Casino: beat a streamer, wagered the code and didn’t receive $464

Hello, I got in touch with this casino, found it on a streamer platform, there was a giveaway on the stream and I won, decided to play with that balance and ended up winning 43 thousand rubles. I decided to withdraw yesterday, completed verification and set the withdrawal, the withdrawal failed, they demanded additional card verification (photo of the card from both sides). I passed it successfully and again set the withdrawal, again no luck, the same error. I write to support, they rechecked everything, told me to try withdrawing again, and suddenly it says withdrawal failed, money confiscated, account blocked. I write to support in panic, they say I have multi-accounting and generally don’t play fairly at the casino, they have no proof, they refer to the finance department. I believe the block is unjustified, they just decided to take the money and leave, say nothing and don’t want to respond.