Heng Xing Assets Limited is a SCAM, unable to withdraw after traded

This broker is definitely a SCAMMER. I was recommended by someone who works at Heng Xing Assets Limited in Hong Kong to do gold futures trading on www.hengxingfx.com. I registered an account and deposited $25000 to my account. Two month late the customer service contacted me and said that the company has changed the trading policy, all customers have to upgrade to at least standard account (deposit amount between $25000 and $100000) to continue to trade and eligible to withdraw money. So I deposited $25000 more to my account. When I requested to withdrew part of money from my account the company rejected my withdraw and said “If you want to take your money you have to request to withdraw all the money”. I resubmitted a request to take all the money then the company said that I have to pay 5% oversea transfer handling fee first and the fee can not deducted from the withdraw. I asked them why? They said the money has been reported to Hong Kong Monetary Authority so it has to transfer over the exact amount to my account. I really do not have a confidence I can get the money back even I pay the handling fee.