Was sent SMS giving me my 1hr delivery slot. I checked the tracker and the van was a couple of streets away. Half an hour after my slot had passed I received another SMS giving me another 1hr slot for later that day. I checked the tracker again and the van was still on the same road as before. Once the second time slot had passed I then refreshed the tracker and it said it was not working but still showed that my delivery would arrive the same day. Half an hour after that I refreshed the tracker again and it said that my parcel had been returned to the depot because they had problems locating my address! Funnily enough the second hour slot I was given ended just as all their customer services had closed!