Awaiting for my refund

Worst company ever..I place my order from shein on the 18th January 2024 on the 1st of February 2024 I noticed on my tracking page it was written shut out. I called buffalo the following day and they told me that the vehicle was hijacked and I asked the lady why didn't they call me and she said she can't answer that coz it's another department but said I should receive a lost package email that I can submit and claim from. I have to wait up until the 1st of March to receive the email which is totally vague stating I should claim from my supplier, supplier being shein. On the shein app there's no option for you to claim lost packages. I dont understand how can I claim from shein whereas it is buffalo who lost my package I mean shein did their part they shipped the package. I am still waiting for a clear explanation FROM this ****** BUFFALO. I WANT MY MONEY