SHEIN Order Not Delivered and Full Refund Requested

I ordered a top and pant set from Shein to be delivered to my home address and it was supposed to arrive on 22 October. I needed this outfit specifically for a holiday, but the parcel has still not been delivered. According to the tracking information, the tracking number is RELR99LPVLPR and the status repeatedly shows “delivery failed”. Each time I check, it just says delivery failed, but nobody has contacted me or successfully attempted delivery to my home. Since the item is now too late for the purpose I bought it for, I no longer need it. I kindly request a full refund for this order without any deductions, as the non‑delivery and delay are not my fault. I ask for this refund to be processed as soon as possible and for written confirmation once it has been done.