Hi, my parcel tracking no. RC781391135SG has been held by customs. My local (Singapore) postal company said that reason is due to missing invoice of the item. They require the recipient to send them the invoice, but the recipient is a large corporation and seems unwilling to help me respond to customs, and instead sent me the e-invoice for me to forward it to China customs. However, I'm unable to contact China customs, is there any email I can send the invoice to so that they can help me forward my e-invoice to the customs for the release of my parcel? Pleaseee and thank you!

I am writing regarding my parcel order number 311966032756 with tracking number LZ266525154CN , which I understand is currently being held by China Customs due to a missing invoice. Unfortunately, the seller has not provided the necessary invoice and has been uncooperative in resolving this issue. I have a hold of the invoice can you let me know where i can submit it so that the package can be released please

My EMS parcel tracking shows Custom Hold for the remarks 'Invoice Missing/Inappropriate. What does this mean?