My withdrawal request was rejected! M3IDEX and Mindex are all scams!

In August 2019, a sales who said he was from M3IDEX and Mindex called me and invited me to join a Wechat group to watch a stock contest. There were so-called stock masters who gave us investment instructions, which sound really reasonable. After the contest, those three masters started to lead us to trade on M3IDEX and Mindex with a limit of 80 million. Some other group members told me the deposit and withdrawal process were rather quick. I was induced and deposited. At the very night, a master taught other group members how to trade and many people made profits. I missed that time, but later I knew they were all hired. I earned 3000 RMB in the first time and lost 6000 in the next. Everyday they gave me some signals and instructions. Those three masters have different opinions. On the last day that they gave me video lecture, they asked me trade on a very different direction. My 200000 RMB reduced to thousands instantly. They promised me they could help me to win my money back. I deposited 300000 RMB more, thinking about recovering all my loss. However, the result was the same. Later I contacted those masters, but they gave me no response and kicked me out of the Wechat group. It was at that time that I realized I was scammed.