Fucking scamming sites.
Don't gamble if you don't know anything about how it works or what could happens. In the end house always wins, otherwise there wouldn't be casinos.
These people never learn a lesson until something happened like this because they think that they can make easy money from these gambling sites. We should remember one thing that gambling sites are not doing charity work instead they are here to make profits for them. One should gamble only with the money which they are ready to lose. Otherwise, people may end up in this situation.