There’s been high turnover of mail-persons delivering mail in my neighborhood. Seem to be different people every couple weeks. So mail often gets mis-delivered, ours going to neighbors and vice versa. Not dependable at all, we long ago converted our important stuff to receive digitally online. Deliverers seem friendly, just not competent. We often get mail with the wrong street name, not just the wrong number.
In our rural area they often deliver our mail to the neighbors and vice versa—fortunately we take care of each other.
As to the postal managers, they follow the old British Navy dictum” “Continue the flogging until morale improves.” :-)