I guess there are two possibilities for this situation: 1. Is your sender information on the express delivery note blurred? If the mobile phone number cannot be seen clearly, they will not be able to check who it is. cell phone. 2. It is possible that your mobile phone has been set up with black and white lists, incoming call reminders, or outage due to arrears, or call transfer. In this case, you will not receive calls. You can take the initiative to contact their customer service online to ask about the specific situation.