Getting the right staff in the right place sometimes makes a big difference.
Some take their time and work slower, some leave them buy your front door and don't ring the bell, some dump them over the fence, and some just mark them as delivered and drive home with the parcels.
Sacrificing one such bill with every delivery magically makes Hermes minions much more reliable.
Same applies to all the others.
This may sound sarcastic, but it is how it is. I don't envy the subsubcontracted delivery people, and I fume at the thougt of privatization, outsourcing to the lowest bidder, while their websites proudly present meaningless labels praising customer satisfaction, trust, reliability, whatever, while their hotlines are useless. But again, that's just how it is. I can't influence that shit. Except by 'tipping' the scale of the stressed, overworked, and time pressured person towards that 5€ dangling before his eyes, if package is delivered to my door.