Where to cancel the order and deduct the full amount, and who to complain to?

In this case, you can take the following measures to make a complaint:

1, where to contact customer service. You can call Qunar.com's customer service phone number, reflect the problem to the customer service staff and make a complaint.

2. complain to the consumer association. If Qunar.com doesn't solve your problem, you can complain to the local consumer association, and they will help you safeguard your rights and interests.

3. Complain to relevant regulatory authorities. You can also complain to the relevant regulatory authorities, such as the Consumer Affairs Center of the Civil Aviation Administration of China.

4. Solve it through legal channels. If the above methods can't solve the problem, you can seek legal help and solve the dispute through legal channels.