Products they act as a seller for, and products they act as a producer for.
When I'm buying item X and it's not up to par, Amazon's response is invariably "just send it on back and we'll refund you." At one point I complained I'm not taking a half-day off work to get this $5 item in the mail and they said never mind, just keep it, and we'll refund you anyway.
Awesome.
OTOH, they have a $10/mo (or so) a la carte book service, labelled "Prime Books," with a "free" subtitle (or it was - I haven't checked back recently.) Clicking on it was auto-enrolling. I didn't find out for a few months that they'd apparently one-click-enrolled me in a recurring monthly bill. It took me 3 hours on the phone to get them to partially refund it, and it ended with me closing my account then and there. Despite having been a member since they more or less "opened their doors," and a good chunk of my household spending going through their portal, refunding money from their own service was a line in the sand for them.
Navigating amazon customer service itself has become a learning experience. Typically the fastest way when getting an annoying customer service agent who “just doesn’t get it” is to request a transfer to amazon USA customer service. You can also request speaking to a supervisot and continue escalating. Sometimes calls end up being 30-45 minutes regardless of method, since they do not always make transferring to amazon USA easy (and then once you get to amazon USA you play the same game over again).
It’s certainly nowhere as good as my original post made it sound, but it’s still better than most online shops.
Its mindblowingly amazing.
I think the one area amazon absolutely has done right is customer service. If any other company made their customer service as good, easy, and simple, I think they would be able to catch up quickly as well.
For example: I recently bought a jacket on sale from Columbia sportswear. It didn’t get delivered to my unit properly (despite their usps tracking saying that it did), and when I emailed them about it: absolutely no response. My issue went into a black hole. Of course I have now blacklisted Columbia sports: never again. If this was an amazon purchase, I would have been able to resolve it almost immediately.