This happens to us weekly. We simply don't get mail at least one day a week, maybe two. Packages are marked as undeliverable. But then they show up a few day

This happens to us weekly. We simply don't get mail at least one day a week, maybe two. Packages are marked as undeliverable. But then they show up a few days later. I've asked around and have heard that mailmen (mailpeople?) in my city just don't finish their routes everyday. If that's because they're understaffed or too busy due to Amazon or just lazy is up for debate.