Joined a startup, raring to go, and they needed to get me a top-end MacBook Pro (16GB instead of 8GB as I recall). Apple stores in SF refused to stock the top-end, pointing me to their build-to-order options at the store. +5 days minimum.
Went with a mail-order house and next day aired in a top-end MacBook Pro laptop (which they had plenty of in every color). Shift key was DOA. Took it in to the Apple store. They had the gall to tell me that since I didn't buy it directly from Apple, they wouldn't (not couldn't, wouldn't) repair it in store, but would send it to their warranty center in Houston (right after Harvey). Got it back fixed, but so many days wasted.
Apple gets so many really difficult things right. Simple-seeming things like basic customer service and proactive quality control escape them.