I once lived in a gated community and didn't ever receive a specific large package from an Ebay auction. Although the item was worth over $50, I didn't insure it, because I won the auction for $10 and that would be all that insurance would have paid.
It did have delivery confirmation, which indicated that the package had been delivered. It is possible that it was delivered to the wrong person, but not likely to have been stolen, since our porch was hidden and neighbors were friends.
Anyway, I complained to the post office. After research using the delivery confirmation, they could determine who the carrier was that day. They told me it had been a substitute, and he no longer worked there. My loss.
On the other hand, in my home town there is a 94 year old man whose carrier usually comes into his house with the mail and checks on him.
There are good and bad employees, but customer complaints are one of the tools that supervisors need in order to be aware of problems. We just hope they can be effective in correcting the problems.
My pet peeve with the post office is that you get different answers (and rates) from different employees. If their rates and rules are so complicated that their trained employees can't get it right, how can we?
Dayle