Even amazon seems to do a lot to err on the side of "automatically make the customer happy" rather than "actually have someone look into the problem" (I did a recent round of "order a three-pack, get a singleton labelled as a three pack, return for replacement, the replacement was also a singleton, return for refund" - they were prompt about the replacement, and prompt about the refund, very straightforward - but I actually wanted 6 of the items (and got someone else to not even order them to avoid dealing with this.) This is a pretty straightforward inventory problem, and I'm not convinced amazon even got any "signal" about it from the interaction. (And after all, the alternate items I ordered... were still from amazon, so they don't have a problem either, really...)