The courier called me and asked me what happened to the number.

Hello, the courier called you because we need to confirm the order information. Please keep your mobile phone open and answer the phone in time. If you don't get a call from the courier, you can go to official website to check the logistics records and see the current location of the express mail. Generally speaking, the courier will contact the shipper or the consignee. If you can't contact anyone, put it in the rookie station, which is inevitable. You can also report the situation to the courier company. If they can't contact anyone all the time, it is recommended to apply for a refund. Try to choose formal channels to buy goods in the future, and be responsible for yourself and consumers. Of course, if you just want to solve the problem, then follow the customer service prompts first and then wait for the result.