I had an issue with being double-charged for an app from the app store about 5 years ago. Went to Apple's support site, wrote a description of the problem, then was asked if I would like THEM to call ME. Not the other way around. Clicked yes, a calendar popped up in which I selected the time window in (IIRC) 10 minute increments when I wanted them to call me.
Within a couple minutes of the 'start' my phone rang and I was chatting with a nice guy (said his name was Daniel in Texas). He already had my records up and he called to ask me if I wanted a credit on my iTunes account or refund to my card. He then said he'd call me back when it was done. About 10 minutes later he called me back and said the credit was issued.
That is exemplary customer service and one reason their customer satisfaction is always rated so high.