You may well find you have the issue I’ve had at the last 3 offices .. so I guess it’s consistent across the board.
If you’ve had a delivery attempt today you have to wait overnight (24hrs near enough). I’ve been in the evening of delivery attempt and been told to wait 24hours.
Seems to be the returns come back from the rounds then it’s about the last thing they do in the day before they all go home for the night. Which is annoyingly after the collection office closes.
In one London office in my old uni flat 12 years ago this was taken to extremes. I new our posite usually dropped between 9am and 10am I went to collect 8am the next day they sent me away because it hadn’t been 24hours yet. I made sure I was there bang on 10 and low and behold it was there!
sigh
EDIT: thinking actually that could be a busy town centre/city thing. I forgot at my old rural workplace I could usually collect within 4 or 5 hours as the postie often called before we opened.