Sounds like you had a particularly bad experience, I’m not denying that, but for every story like yours there are plenty of stories full of glowing praise for Apple’s aftercare and customer service in general.
Nearly every Mac user I know has got at least one story of taking their machine to an Apple Store and having their expectation not only exceeded but just blown out of the water in some cases (being given an entirely new machine right there on the spot, for example).
The whole Genius Bar/Apple Store experience is something that really makes Apple stand apart from other makers of both phones and computers, and one of the big reasons why I have stuck with Apple over the years.
So I’m not denying your experience was bad, but I’d like to provide another view for anyone reading your story who doesn’t know Apple and thinks this is representative, because in my experience and in that of many others, it isn’t.
Apple does fail to acknowledge and address major bugs from time to time, and there have been massive hardware “fails” over the years (the iPhone 4 “Antennagate” issue being one of the most egregious), so I’m not saying they’re perfect. What I am saying is that their customer service is head and shoulders over basically every other company out there.
Imagine how much worse a service you would have gotten if your PC had been made by Toshiba or Lenovo!