2. Submit a complaint: If you can't contact the customer service of Lexue, you can submit a complaint in Lexue official website to explain your problems and requirements in detail.
3. Complaint: If you can't get a refund through the above methods, you can complain to the relevant regulatory authorities or consumer protection organizations. Please note that the refund process may vary by region and specific circumstances. If you need a refund, please read the refund policy and process of Lexue carefully and follow the requirements.