I haven't picked up my courier yet, because he didn't call or send a text message, but Taobao shows that the courier has signed for it. What should I do?

First of all, we usually contact the seller first and tell him this situation. If they ignore you, look at the express delivery, then find your local express service point and ask what the single-number express delivery is like now, but you didn't sign for it when you didn't receive it. How to show the receipt? Ask the courier directly.