Atrocious Outdoor Warehouse Customer service

I bought an Online item for my December holidays and expected delivery within the their online promise of 2- 5 days delivery lead-time. Yesterday was when I expected delivery (5 days max lead-time). I received no warning my parcel will be late. I contacted Outdoor Warehouse. No apology only bland instruction that I should follow-up with their courier partner Dawn Wing and that it is not their problem. I called Dawn Wing call centre number I could not get through for support. There is NO customer service or ownership shown by Outdoor Warehouse to resolve my issue. I managed to get email reply from Outdoor email service team that Dawn Wing is running completely late with all their deliveries and it appears that they can only deliver by earliest 17 December (3 days later than Outdoor Warehouse max lead-time promised and too late, we would have left for our December-January holiday. This is shocking customer service from Outdoor Warehouse. I would not order from them ever again! Very disappointed, my item was meant to be used on our holiday.