After depositing around $500 I managed to get around $4500 in winnings
The amount you started with and the one you have earned are too small for them to use in holding down your account, there must be something more significant behind just these, rollbit have got more reputation than you think your little deposit or winning will be attractive to them.
shortly after I got contact support, which I did to be told that I am trying to avoid a ban, also just being told that the links are obvious, but they never said which links, they just asked me about another account, which I don't have.
this shows clearly that you're trying to by-pass a route and got caught by their system, this may be due to many reasons which we cant say which of them is the cause, but i want to believe that you know what you did better than us that resulted to this.