Fraud platform. Severe slippage. Unable to withdraw

I followed teacher Gu to invest here in October. As if on cue, there was a bonus for deposit. But you can't witdhraw during the time of activity. Then the activity was over in November. And I was going to withdraw money. But the teacher asked to me adjust the leverage higher because the market fluctuated greatly. Then I know it's a fraud platform. I bought when the prices were going down. But then the price went up for 30s and then stopped for 10s. In the end, the price went up 300-500 for 5s, which made me lose a lot. The teacher said he would make up for this lose. And I asked the customer servise about the slippage during the time I was waiting, they just gave me a vague answer and promised they would compensate me and would give me 20,000 if I deposited 20,000. I wanna consult my teacher but the teacher didn't reply to me. I thought he should abscond. So I refused their compensation and asked for witdhrawal. They keep delaying my withdrawal. I researched much info and there are many problems in this platform. I hope there will not be another victim, so don't invest here