I bought something in Pinduoduo. Why didn't the courier call me?

No matter which platform you buy, there are only a few express services, unless there is a special express service on the platform, such as JD.COM, where each express outlet, each dispatcher and service are different. Some people will contact the recipient by phone, while others will stay at the doorman, post station or sign-in point directly. But if the bag is lost or there is something wrong, you can call to complain or directly refuse to sign it, not to mention that no one has signed it.