I think you’re getting some harsh comments here John. I’m totally on your side.
The issue isn’t that you’re not getting your mail when expected, just the hour at which it arrives.
And after accepting that its not coming on that day, going out , maybe to the pub or whatever, coming home to find the dreaded red and white card on the floor telling you that you’ve missed a delivery.
Of course, on going into town the next day to the sorting office, you discover that there’s no customer parking available there.
So, either you risk a fine by parking across the road by dunhelm mill and walking back over to the sorting office or find somewhere in the centre of town to park and walk there.