Solution to the delay in refund of training institutions: you can complain to the local industrial and commercial department or call 123 15. Consumers can complain to the consumer association where the consumer is located, or to the consumer association where the responsible person is located.

After receiving the complaint, the consumer association will forward the complaint of the consumer to the complained unit, requesting to handle and answer the question within the specified time; Or according to the "People's Republic of China (PRC) Consumer Protection Law" and related laws and regulations, to the relevant administrative departments to solve. For some important complaints, the Consumers Association will also send people to investigate and solve them, understand the relevant policies and regulations, and give some explanations to consumers.