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.
Why are you twisting it? Every casino is not like 1xcraps. You do not have any idea about Sportsbets reputation. I believe there is a misunderstanding or maybe something else. Every casinos are not the same. If community see such behavior from a casino. The Community DT members always ask you for proves and if you can show them, The casino account will get negative feedback. So, Don't throw stones blindly.