AGA Traders Group Scam

I open an account with them in Nov 2020, I ask them is there any account opening or withdrawal fees, they said no. This broker is in Hong Kong, now when I want to withdraw money, they said I need to pay 20% service fee upfront before I can withdraw money from the account. Even I pay the 20%, there is no guarantee I can get my money back. Stay away from AGA Traders. I have quite a lot of money in the account. Please advice how to get my money from the account back.