after signing i have deposited money to coinzino.io to play the first few times i withdraw is ok but after the 3rd time i have deposited and played after winning i withdraw then they closed the account and sent an email saying suspect me of violation waiting for them to investigate. after 5 days I still have not received a response from the email, then I texted the support chat on the homepage, they said I was in violation and the account was closed and can't be reopened, I asked what violation I did and asked by proof they don't answer maybe they want to take away more than 3000$ in my account
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OP, by your evidence I have not yet seen whether or not they have a legitimate reason to ban you, and whether you have full rights to demand the full amount of deposited money back. But that being said, I did not see you write them the demand of a refund. So you might want to do that, so you have definitive proof that they refuse to refund your deposited funds.
If you want your scam accusation to be taken more seriously, then you should post it in the scam accusations subforum. However I would want to see more proof of who is in the wrong here.