1. Contact customer service: contact the customer service staff of Orange University to explain your problem, and they can help you deal with it. You can contact the customer service staff through official website or the customer service hotline on the application or online customer service.

2. E-mail: If you can't establish contact with customer service, you can try to send an e-mail to Orange College to explain your questions and requirements in detail. Official website of Orange Learn or an application will generally provide a contact email address.

3. Switch payment platforms: If you use third-party payment platforms such as Alipay and WeChat for payment, you can try to apply for a refund on the third-party payment platform, which may be more convenient.

4. Seek legal aid: If you think your rights and interests have been infringed, you can try to seek legal aid and solve the problem through legal channels. If you want to quit the course of orange music learning, you can try to contact the customer service staff of orange music learning first. If you can't solve it, you can try other methods.