US Postal Service is not ready for prime time

I want to find a way to cancel my Amazon orders that are being delivered by US Postal Service. So far there is nothing that they have brought to me, that arrived on time, or without a bunch of adjustments to the delivery. It’s mentally taxing, and they’re making it into a situation where it’s actually easier to go to the store. By the same token, that might be intentional. “Fuck your packages“ could be what they’re saying. Just give me a piece of paper to carry for $.50.