2. You can try to contact the management or customer service department of Dahan Youku by phone, email or social media to explain your problem and seek a solution. When writing a letter or making a phone call, be sure to stay calm and clearly state your problems and complaints.
3. If you bought the products on third-party platforms such as Taobao and JD.COM, you can also make complaints through this platform. These platforms usually have perfect consumer protection policies and dispute handling mechanisms.
4. If Dahan Youku's behavior violates local laws, regulations or industry standards, you can complain to the relevant regulatory authorities. For example, if Dahan Yuku's behavior involves false propaganda or fraud, you can complain to the local industrial and commercial bureau or consumer association.
If you think that your rights and interests have been seriously violated, you can seek legal aid. You can consult a lawyer or legal aid agency to find out your rights and available legal channels.