Need margin and turnover to withdraw funds?

I wanna withdraw $3,000.. At first, the customer service asked for 25% margin and I paid. But then he said the withdrawal was too much so I have to pay 1,500 USD. And that's the third time when he said I have to pay 1,500 USD to get half of my withdrawal. This is ridiculous. Can I compalin about them and get my principal back? I don't care about the profit now!