Unjustified account closure right after a big slot winning

I have seen an advertisement on tv about monte carlo casini and decided to open an account. I deposut £200 and received bonus of £200. After opening the account i upload my credit card , passport and proof of address as i have been playing on many casinos and fully aware of the verification. During my plays my balance went over £2000 all with stakes around £8 and below.. And few times i made a stake of £10 and won £2950 on gonzo quest. The same day they publish my name on their home page as big winner. I was over the moon to have such a good win. But the next day when i requested withdrawal they sent me an email about closure of my account.
The email reads :
After reviewing your documents, your Monte Carlo Casino account has been closed and your balance with-held.

This is due to:

• Fraudulent activity detected on your account.

This is in accordance with clause 3.12 of our General Terms & Conditions:

“Monte Carlo Casino reserves the right to terminate an account, ban a player and retain all funds where that player is reasonably suspected of engaging in fraudulent activities which include, but are not limited to, use of stolen or falsified credit cards or account numbers, chip dumping, forgery, collusion, and submission of data or documents which are forged, stolen or otherwise misappropriated..”

You are not permitted to open another account with Monte Carlo Casino. Should you attempt to, or succeed in, opening a further account with Monte Carlo Casino by omitting and/or by changing personal details and/or by providing false or misleading information, we reserve the right to immediately close that account and to retain any balance on the account, including any deposits. May we remind you that we take the observance of our Terms and Conditions very seriously and shall not tolerate any non-adherence.

Please note that the result of our investigation is final and your account will remain permanently closed.


Thank you for choosing Monte-Carlo® Casino.
Best Regards,
Emily
Monte-Carlo® Casino Customer Service Team


Although i have accounts on many casino sites , they refer me as fraud user , even i sent them all documents required. The reason they close my account according to live chat conversation was due to staking £10 which there was no warning what so ever during the game play , and i was fully unaware of that fact.
They not only kept my big win but also kept my previous winnings and name me as fraudster due to fact that i had a big win.
Although i ask them to remove my name from their home screen , they still displaying as big win on gonzo which they refuse to pay.
I had previous wins on different sites and never had such an issue. I recommend all punters to avoid this casino as they try to find any excuse to close your account and avoid paying out.

Their customer service is not helpful at all , and all they say is sorry for the inconvenience.