I always complain in two ways at the same time One is to call the courier company where he works. The phone number is found from the logistics details on Taobao. Almost all courier companies have regulations. The customer service of the courier will be punished after receiving the report. The other is to report the courier's problem to the seller. If the service attitude is not good, they will report to the courier company and make demands. The courier company will not ignore it. They are important customers of the courier company. In fact, when one of these two methods can solve the problem, they may not be used at the same time. You can complain, you can try. This is definitely a satisfactory solution.