Tickmill scammed my principal and banned my account for no reason.

Hello everyone! I am depressed after being scammed by this platform. I deposited a lot of money in 2018. And there were no problems for withdrawal and deposit before October (although I lost some money). They asked me for no deposit certificate or fund source certificate (some platforms would ask for these things if you want to deposit over $50000). I lost $21000 in December and January the next year. Then I earned $9000 in January. The platform asked me to provide my deposit proof and fund source proof. I did as they asked. Then they banned my account for no reason. I am not saying that they must be a scam, but they should be a dealing-desk platform. They banned my account when I got $12000 in it. If they don’t give it back, I’ll call the police. Please help me, WikiFX.