scammer

I have been recently scammed by wintersnow (www.wintersnowx.combroker). They changed their name from wintersnow to grand signal markets limited and now to OBFX (best@lunbgold.com). I have deposited $24000 and after investing it currently now on $63000. I have everything evidence you could ask for. I asked them to withdraw money but they refusing by bringing more excuses and they told me to deposit 10% for anti-money laundry. My account is still active and still contacting them by Viber (UK number). I need help to recover my fund please!!