Fraud platform that cannot withdraw and delete my account

I had deposited a total of more than 28,000 successively, and then I lost to only 9,000, and I didn't want to continue to buy. I asked for a withdrawal yesterday, but the customer service has been unable to reach. Today I told them that if they don't pay me, I will solve it through legal means. After that, they deleted my account and blocked me by email. It was the liar named Ah Jun below.