Unable to withdraw

I can’t withdraw my money
first I deposited 500 dollars and gained 12000 dollars and they blocked my trading account stating that I need to upgrade to Gold Trading Account with 1000 dollars which I did immediately.
So my account was 13000 dollars after the upgrade so I decided to withdraw but they declined my withdrawal and said that minimum withdrawal limit for Gold account is 30,000 dollars .
please help me check if it’s true or false trading app.
Thanks you.