Non existent delivery

I placed a substantial order with Shein in December 2025. Items were to be delivered on the 5 January 2026. The items did not arrive yet Imile has advised Shein it was delivered. It is 4 days later and still no feedback despite calls and me following up from my side. Feels like Shein and Imile have ****med me. All I want isthe order I paid for. If not, then tell me and refund me.