I have an issue with the 1xbit.com website. My account had a balance of over 190 mBTC (or 0.190 BTC) when I noticed it went to zero. I contacted support via chat and they told me not to worry that they were facing technical issues and they would fix the issues in my account right after that:
https://imgur.com/Fp2iGQy
After that I requested my account to be blocked until my funds be restored. I only got a message from Security department stating this:
"We want to inform you, that our company decided to stop any collaboration with you (closing your account). The decision was made after a careful investigation of the situation by our security service. The decision is based on a violation of the Terms and Conditions."
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I think unfortunately you won't see any more of your money here.
They will simply remain of the opinion that you have done something wrong, without providing valid evidence.
Unfortunately, a lot of online casinos do it this way.