Unable to Withdraw my money

I invested money. Now I can't get it out. I have 38,000 USDT in my account When I gained and tried to withdraw 9,000 they told me that my account is frozen due to "malicious acts" The only way to unfreeze it is to replenish another 20% of my current balance which is horrendous and obviously a scammer move.Deal carefully with golday9999