Customer support for these issues is kafkaesque.
"Hi I have not received my package which says it was delivered at a time when I was home"
"Let me check the tracking, sir it shows that you have received the package"
"I have not, no delivery was attempted"
"Yes you are right you will receive your package shortly"
But larger scale it made me doubt if their model of Uber style contract workers doing just in time delivery with incredibly tight deadlines can ever work. For the speed they promise at their scale I don't see how they'll get around hiring more workers, giving more reasonable workloads, and providing incentives to actual get the job done right instead of lying to try and meet their numbers.
I went to buy it from the manufacturer's website instead. Ships without trouble right to my apartment, and I don't have to worry if I'm buying damaged goods, a knock-off, or some garbage. Someone is doing some terrible Pinto-style calculations, shaving pennies here and there while losing pounds building a delivery network that gets 'most' packages 'somewhere', 'most' of the time.
I don't know the pay structure for Amazon drivers, but I would not be surprised that we are giving up "trustworthy" drivers for the cheapest option Amazon can provide at scale. I've heard working at UPS as a driver is a great job long-term for some people perhaps leading to more integrity, but I'm just speculating. Maybe I'm wrong but I trust UPS or FedEx with my packages more than Amazon or their flex drivers.
I have frequently had packages marked as delivered that were not delivered. When I contacted Amazon they would say if it does not show up in a day or two contact us again and they would also give me a $5 gift card. The package would always show up just like they said. It's pretty obvious that the drivers are lying about the delivery (due to aggressive quotas, I assume) and it's obvious that Amazon is aware of the problem because they have a pat answer when you contact them.
I have also had many packages marked as undeliverable for any number of completely made up reason. Reasons such as: no access code (not a gated community, no access code required), nobody in the office to receive the package (it's a condo, not apartments, there is no office), no safe place to leave the package (there is a six foot privacy fence around the front porch), could not find the address (receive multiple packages a week without issue), etc. These packages would always show up the next day proving these were completely fabricated excuses.
I once went so far as to try and get Amazon to blacklist my address for their contracted delivery drivers, but, of course, they wouldn’t do it.