Unable to withdraw

The guy posted some forex trade in WeChat Moments since July. It's said that 100% profit and I can be led by a teacher. So I deposited ￥65,000. After I profited, the account balance was over ￥680,000. I was told the platform should upgrade and I have to register again. But my first withdrawal didn't arrive for a long time. I contacted the customer service, they said my bank card information was wrong so my withdrawal was refused. But I checked my information over and over again. The customer service said I have to pay 20% of my account balance. I paid over ￥130,000. Then the platform was upgraded again. I can't log in to the former one. I downloaded a new app called OANDA but still can't withdraw. This time is because of insufficient credit score. I just got 80 and I have to get 100 to withdraw so I paid ￥100,000. I deposited 200,000 in total, please help me.