Legal analysis: illegal and non-refundable remedial classes can complain to the Consumers Association or bring a lawsuit. The specific method is as follows: 1. The remedial classes are run by school teachers. For the remedial classes run by school teachers, if you apply for a refund, but the remedial classes refuse, you can complain to the Education Bureau; 2. remedial classes. The remedial classes for business people run by non-school teachers can complain to the Consumer Protection Association if they apply for withdrawal or refund, but they are rejected by the remedial classes.

Legal basis: Article 266 of the Criminal Law of People's Republic of China (PRC) defrauds public or private property, and if the amount is relatively large, he shall be sentenced to fixed-term imprisonment of not more than three years, criminal detention or public surveillance, and shall also or only be fined; If the amount is huge or there are other serious circumstances, he shall be sentenced to fixed-term imprisonment of not less than three years but not more than ten years and shall also be fined; If the amount is especially huge or there are other especially serious circumstances, he shall be sentenced to fixed-term imprisonment of not less than 10 years or life imprisonment, and shall also be fined or confiscated. Where there are other provisions in this Law, such provisions shall prevail.