I'm Brazilian and I bought a product in Japan using a website called "zenmarket" and I decided to send it to a shipping agent in China called "cssbuy", but upon arrival in Hangzhou it is asking the recipient to send the declaration materials to customs, but cssbuy does not want to get in touch, and the address and telephone information belongs to them, how do I contact china post/ems to send this invoice to release the product soon? tracking number (EN327015126JP)

Greetings! I have two packages coming from Japan to China (RX110103118JP and RX110610914JP) and now they are both in Shenzhen customs for more than a month. I am the receiver as my name is on the airway bill, but the address on the bill is from my P.O. Box in China. I contacted the seller, the carrier and my PO box and none of them can help me. My question is, I live in Chile, can I pay taxes or make a declaration from a distance so that my packages are delivered from customs? Or what other option can I have? The salesperson in the Japan store gave me this contact number 0755-2675-6110, I don't know how to call from where I am because I don't speak Chinese. Please, I beg your help and advice because I am alone in this.

Tracking number: RS001435159KR
It's been a while since I sent the product, and I haven't heard anything about it arriving, so I checked my parcel tracking and it says "Waiting for Cargo Declaration Materials from Addressee" since 9 November.

When I asked the consignee, he said that the package was detained by Chinese customs and that I needed to pay $85 to get it cleared.