Do you think they read your message? Why do you think they didn't answer it? Do you think an honest casino can behave this way towards players who make deposits with their own money?
What do I think about their behavior of withholding your fund and re-enable withdrawal once losing big is pretty much described through me leaving them a tag. Do I think they read my message? Well, when an account get an orange number on their profile, they usually notices it rather right away and, more likely than not, read the reference on the tag [if there's any]. So, yeah.
One thing that I think worth aired, though, is that I personally think they're not the sole bad actor here. My gut feeling somehow said that this is a situation where a scammer got scammed. Their action of locking your account from making a withdrawal, and then re-enabled it [once the fund drained] without having their allegation of multi-acc abuse cleared is questionable, but I believe their findings are not unfounded. So this is a case of you finally got what's coming to you.
Why I think this is the situation here? Well, aside from when casino usually are right when they made this kind of findings [they spent tens of thousands, if not hundred of thousands, dollars to get their detection algorithm to be rather precise] and other reason I can't disclose, the main factor is your story of your brother's email.
It sounds... a bit weird.
To have a casino to point out one specific email address that somehow happened to be your brother's email instead of a stranger, not to mention who live in other country? What's the chance? You both using similar address like aleks86@emailprovider and aleks87@emailprovider?
Just wanted to add to this thread. Metaspins bonuses all come with MAX wagering limits. Usually 5-25$ per spin/bet. The fact that they kept giving him bonuses with those limits means they just kept expecting him to lose the funds. Also someone who is depositing 100,000 is not going to want to be limited to 25$ spins, even if OP did have another account its impossible to abuse the system when you include their rollover and wagering limitations. On top of that we saw Metaspins straight up lie in this thread about the reason they locked OPs original account. This is enough red flags for anyone to realize its not safe. There are countless other casinos that do similar tactics, when you win big theyll find a reason to not pay out. Ive seen other Metaspins members lose their funds on big withdraw requests when suddenly Metaspins cared they used a "VPN". But you can see they advertise using it and don't block anyone until you win big.