Faced with this situation, you can only get the money back from this training school through legal channels, because you have already complained through the Consumers Association, but you still haven't used the most effective means, that is, suing him in court through legal means or consulting a lawyer. The last resort is to sue him in court, but it takes time and effort. If you really want to suggest that it is more effective to find more people who have the same experience as you to sue him, like this.