Maliciously debiting losses from my account

They cooperate with teachers on the platform. I sent messages and they did not reply, which is suspected of fraud. They also maliciously deducted the losses from my account. When the balance of my account was at its highest, it was only a little over 10,000 US dollars. At the same time, I could lose a total of more than 20,000 US dollars. After my account became negative, I continued to lose more than $10,000. Requesting the return of principal of US$10,000.