PACKAGE NEVER RECEIVED FROM SHEIN

I ordered goods months ago that were never delivered. After at least 20 e-mails to their customer service address, I received a reply stating that the goods were delivered on 23 September 2023. No matter how often I advise that I never received the package and ask them to investigate, they reply with the same answer " the package has been delivered". There does not appear to be any alternative way to contact them.