Unable to Withdraw and Got Demands to Pay Fees

I've made deposited $10,728 to the SICH Capital LTD. I asked the customer service to withdraw the money from my account. The Customer Service wanted me to pay for handling fees at 8% of my profits trades on MT5 which equal to $13,073.03 USD before I could allow to withdraw money from my account. I've asked is this amounts able to be deductible to my account available balance? The answer was no. It sounds suspicious & scam to me. Please help investigate into this matter and hope i could get back.