Can’t withdraw. Fake investor scammed me.

At the beginning of this year, a woman added me on WeChat. We chatted and found that we are all doing stocks. Then she inadvertently sent me a screenshot of her earnings, saying how profitable it is to trade foreign exchange, and then let me open an account at BENEFOREX. She asked me to deposit $30,000, assigned me an instructor and guaranteed that I could make money. I could still make a small profit at the beginning. However, one night, I lost a lot of money at once. She asked me to deposit more so that she can arrange me a new instructor, so I deposited another 20,000 dollars and changed an instructor named Liu. In less than two days, I lost more than half of the money. I locked the position in time, or else my position would be liquidated. I later questioned them, but they blocked me on Wechat and won’t answer my phone. I think this is a scam platform, specializing in earning clients’ loss. I strongly urge relevant departments to destroy them.