My experience was the same as countless others with DX. I had the delivery slot. I waited in, watching carefully. They didn't visit the property, they then claimed they could not access the property. Sadly for DX on this occassion, they were visiting a property that has extensive CCTV coverage with voice alerts, alerts on computers, mobile devices, and TVs within the property. There is 24 hour coverage. Getting to our front door trips 3 cameras. We never miss anyone getting to our front door. A review of the footage confirms that the AI notification did not fail and that there was no traffic on our drive for an hour before, through to an hour after our delivery slot. I watched the tracker and can see that they got fairly close around 19:56. I kept particularly vigilant personally watching the drive and surrounding area to help a driver find our property if they looked lost.