Imile logistics delaying my parcel

Well,I ordered from shein on the 4th of December but I haven't receive my order. I got a message on Friday the 20th of December saying my parcel will be delivered within 24 hours but I haven't receive my parcel. If there's anything I've noticed about imile logistics is that they are expensive but they don't deliver our parcel on time.I'm tired of waiting.I don't think I will ever order from Shein again.