Order not delivered

I placed and paid for an order with Shein on 16 March 2025. First, got an email to say that the parcel will be delayed because there is an increase in orders. On 26 Mar, received an email to pay Customs duties, paid immediately because I needed the parcel by 31 Mar. Guess what, haven't received my parcel as yet. Called the delivery agent, Imile Delivery and every time I am given a different story. This was my first purchase with Shein and a horrible experience. I ordered clothing for a function but had no clothes for the function on the 31 Mar. The delivery agent is not even saying that they will get it delivered ASAP, just have to wait out the process again. Very disappointing for my first purchase. I was planning on buying alot more but with this experience, I'm sceptical.