AJS future platform shutted down and absconded with fund. We have nowhere to complain

I joined AJS future platform on Dec. 14 with a total investment of over 600000. During the New Year period, I want to withdraw my principle, but it does not process for over 24 hours. The platform suddenly shutted down and cannot find anyone. The people in group were under panic and realized that we were deceived. Return our hard-earning money. We strive for several years to earn them and it is all deceived by them. I hope to expose them and arrest these scaming group as sson as possible