I have had an item stuck in Shenzhen's customs office since November 12th that I sent back to a seller in China. I am now being refused my refund from ebay. What can I do to allow for my package to be released and sent to the seller. The tracking number is LH153868881US sent from USPS

Why is my return item stuck in Shenzhen customs tracking number
RN041271952GB

Hi,
I'm waiting for a package wich information is this:
2019/9/6 2:24 Received by Post Office
2019/9/7 23:29 Item presented to export Customs/Security YZSZGJYJHHJ
2019/9/10 1:56 Item presented to export Customs/Security YZSZGJYJHHJ
2019/9/11 19:42 Item presented to export Customs/Security YZSZGJYJHHJ
2019/9/13 17:41 Item returned from export Customs/Security YZSZGJYJHHJ
2019/9/13 17:43 Departure export customs SHENZHEN

Is there any problem? Item returned? is not be sent to my country?
Tracking number is LA957296214CN