if you are winning lots of time then it is reasonable for them to lock your account. they do not like people who is winning many times.
You should not generalize the casino industry Sportsbet.io has its own reason why they lock one's account and never because of the continuous winning, Sportsbet.io still enjoys the trust of the community, OP got his answers already he should check the email that was sent to him, OP's experience is not new to casinos like Sportsbet and they always get their winnings provided that they did not break any rules, check your email and post what's in there if you aren't yet satisfied with the answers given to you.
Well, He is 3rd person here trying to raise his finger to sportsbet. Yesterday I posted on Sportbets ANN and then I realized that Steve was aware of this issue and it was handled. The OP never posted in the last couple of days. So, I believe he is satisfied with the response he received from Starbets. No matter what, OP should clarify the matter and lock this thread or explain everything.