My package is currently held in Nanning Customs for over a week now. It is a returned goods (jewelry) to the seller and I shipped back to them using USPS. My seller has not received any mail or call from Customs. They called China Post for help, but China Post cannot help because customs is holding it. They call China Custom (12360) and China Custom say they do not have package for some reason when the tracking says it is held in customs. Is there tax on returned goods?
Can you help me so I can have the package delivered?

My package has been held in customs for 5 days now. Last two updates were , taxable mail, to be paid by the recipient and the import custom keeps pending. What does that mean? Should I worry?

Hello.
Mail number： RO149976575RU.
I am the sender of the letter.
What is required to receive a letter?
The recipient is unable to provide documents, she does not have a computer and she is an illiterate person.
Sincerely.