Withdrawal can't be processed without deposit

In September I had decided to start trading with my school fees money . A trader then who had told me that I would get my profits in an hour decided to take my profits to fox expert trading platform where I was told I would be able to withdraw my profits easily. As I was trying to withdraw my profits I was told to deposit a sum of 25,000kenyan shillings so that my profits would be released. I have not been able to withdraw my profits and it has been withhold for about a month now. Please help me get my money back.