Unfortunately the casino you mentioned here have no license so there's no official authority that could help you to get your deposit back. That's the issue with casinos that don't own any license. They don't need to be scams, but if they decide to block your account including your deposit just because you might had too many questions and you're just annoying for them, they can do it without any consequences.
You say they refuse to tell you who owns the casino. They have no obligation to tell you who owns the casinos and I'm getting back to what I described above: if you very too persistent and annoying from their point of you, they just blocked you.
If you care about casino owners and who runs the business, then you need to start playing in licensed casinos. If you choose those with the Swedish license, you can't go wrong.
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