Update:
So after contacting Videoslots directly via mail, I received an reply last night. It contains no new information, which I have not already got via live chat:
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Hope this email finds you well.
With regrets I am the person at Videoslots to inform you that a business decision has been made to permanently block your Videoslots.com account. Under no circumstances are we able to help you with a reactivation of your account in the future. Since all accounts are personal, you will not be able to register any new accounts either.
"1.3 A person registering at Videoslots accepts and acknowledges:
all definitions and stipulations in these Terms and Conditions"
"1.4 Videoslots reserves the right, at its own discretion, to:
decline a person to open a Videoslots account and/or to close an existing account decline to accept no deposits without any explanation, provided that any wagers and winnings already made will be honoured by the Company as long as these were not acquired by fraud or other illegal or illicit means;
suspend and/or cancel the person from promotional activities, competitions or other services, whenever"
We wish you all the best.
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To me it looks like a standarized email which is sent to people which account they want to be closed without a reason.
I have done nothing wrong, so I do not accept this treatment. I thought Videoslots are a trustworthy casino, but apparently if you win a lot they kick you out.
Now I need your help from this forum! What legal ways are there to get justice?
Keep in mind that I still had my own money left on the account which did not pay me back.