I have deposited 3 times 500 usdt on my account.

I have deposited 3 times 500 usdt on my account with number 454167249 . I was betting and have around 500 usdt on my account and they logged me out. I cannot login again. I sent email and they said to me they stop coollaboration with me and not allow me to login and get back to me my deposited money. I have 500 usdt on my account around and i dont know why they not give me back my deposit money. WHy stealing my deposits?
account with number 454167249