1. Collect evidence: collect relevant evidence, including publicity materials, contracts, payment vouchers, course materials and communication records of training institutions. This evidence can support your complaint and prove that your rights and interests have been violated.

2. Contact the training institution: 1. Try to communicate with the person in charge of the training institution or relevant person in charge, express their dissatisfaction and complaints, and seek solutions to the problems. You can complain in writing or orally and ask for a written reply.

3. Contact relevant departments: If the communication with training institutions is not satisfactorily resolved, you can contact relevant departments to make a complaint. The specific complaint channels may vary from region to region. You can consult the local education authorities, consumer protection agencies or industry associations to understand the specific procedures and requirements of complaints.

4. Provide evidence and explanation: When you complain to the relevant departments, provide the evidence you have collected, detailing the contents of your complaint and the losses you have suffered. Ensure that clear, specific and objective information is provided to improve the credibility and effectiveness of complaints.

5. Follow the complaint process: complete the complaint process step by step according to the requirements and instructions of relevant departments. It may be necessary to fill in the complaint form, submit relevant materials, attend the hearing and other steps. Please be sure to comply with the relevant regulations and requirements, and provide the required documents and materials within the specified time.

6. Seek legal aid: If your complaint cannot be satisfactorily resolved, you can consult a lawyer and seek legal aid. Lawyers can provide you with professional legal advice and help according to the specific situation, and assist you to take further legal action.

Characteristics of educational and training institutions

1, Education Speciality: Education and training institutions focus on providing education and training services in specific fields, such as language training, vocational training and academic counseling.

2. Flexibility and personalization: Education and training institutions can usually provide flexible learning plans and curriculum arrangements according to students' needs and learning progress.

3. Practicality and application orientation: Education and training institutions pay attention to the combination of theoretical knowledge and practical application, and help students apply what they have learned to practical situations through practical activities, case analysis and simulation training, so as to cultivate their practical operation ability and problem-solving ability.