1. First, you can take the initiative to negotiate with the other party to see if the training institution agrees to refund. If negotiation fails, a lawsuit can be brought to the people's court on the grounds of contract dispute and the other party can be asked to refund. If the other party breaches the contract, it can also require the other party to bear the corresponding liability for breach of contract and compensate for the losses. If the two parties have not signed a contract or there are circumstances that are not clearly stipulated in the contract, the responsible party shall be determined according to the actual situation, and the two parties shall negotiate to solve it first. Of course, if both parties can voluntarily admit the liability for breach of contract after a dispute arises, priority shall be given to settlement through negotiation.

2. You can bring a lawsuit to the court of the other party's domicile or the place where the contract is performed. When filing a lawsuit, you need to submit a copy of your ID card, a complaint and relevant evidential materials. The complaint shall state the basic information of both parties, as well as the specific claims and factual reasons. If negotiation fails, complaints can also be made in consumer associations and other departments; You can also sue in court for a refund. If the performance of the agreed obligations has not yet started, both parties may terminate the contract in advance through consultation and demand the return of the paid related expenses.

The procedure for bringing a lawsuit to the court is as follows:

1. To write a complaint, you must first write clearly the basic information of both the original defendant and the defendant, then list the claims, and finally write clearly the whole story;

2. Bring the complaint and submit a copy according to the number of defendants, and the original and copy of the evidence to the filing court of the local court for filing;

3. After filing the case, the court will serve the complaint on the defendant and the notice of proof on the plaintiff.

To sum up, if the two parties have not signed a contract or there are circumstances that are not clearly stipulated in the contract, the responsible party shall be determined according to the actual situation, and the two parties shall negotiate to solve it first. Of course, if both parties can voluntarily admit the liability for breach of contract after a dispute occurs, priority will be given to negotiation and settlement. If negotiation fails, complaints can also be made in consumer associations and other departments; You can also sue in court for a refund.

Legal basis:

Article 3 of the Measures of People's Republic of China (PRC) Municipality on Punishment of Infringement on Consumer Rights and Interests

Market supervision and management departments shall impose administrative penalties on acts that infringe upon consumers' rights and interests according to law, adhere to the principles of fairness, openness and timeliness, combine punishment with education, and comprehensively implement administrative guidance by means of suggestions, interviews and demonstrations to urge and guide operators to fulfill their legal obligations.

Article 4

When providing commodities or services to consumers, business operators shall follow the principles of voluntariness, equality, fairness, honesty and credit, perform their obligations in accordance with the provisions of laws and regulations such as the Law on the Protection of Consumers' Rights and Interests and the agreement with consumers, and shall not infringe upon the legitimate rights and interests of consumers.