What do you mean Dayun Express didn't sign for it? What should I do?

Find them, if you don't sign for it, the goods will not be delivered, and ask Dayun to take responsibility.

2011-07-0317: 45:13 Zhejiang Ningbo Fenghua Company received the goods abnormally (3 15500) Remarks: No one sent it, and the phone number was wrong.

So you can contact the consignee and change the consignee and contact information.