Legal analysis: formal training schools can withdraw within the specified time. After that, they can negotiate according to the situation. If they can't retire, they can complain to the local labor and social security bureau. It is difficult for a training school without school qualifications to apply for a refund, because there is no school qualification and no supervision department, and it takes a long time to complain to the Consumers Association. Therefore, it is necessary to ensure that the training school is legal and formal in the early stage of payment.

Legal basis: Article 577 of the Civil Code of People's Republic of China (PRC). If one party fails to perform its contractual obligations or fails to meet the contract obligations, it shall bear the liabilities for breach of contract such as continuing to perform, taking remedial measures or compensating for losses.