The finest Customer Service ive ever experienced (twice) was with Timex watches.
Many years ago, i bought a top of the range Ironman watch, with digital compass, altimeter,you name it, it had it.
By what i can remember it cost well over £60, and that's back in the late 1980s, so it was a luxury purchase, and had been given rave reviews in Trail Magazine.
After a few months, the Indiglo nightlight function packed in, so i contacted Timex who posted me a business reply envelope to cover cost of postage.
After around two weeks, i has a parcel through the post, with a remarkable attached letter.
A lovely apology for the fault so soon after purchase, and a big thank you for purchasing one of their watches.
The biggest surprise was that they returned the faulty watch, and gave me a new one as well.
Ive still got the replacement watch to this day.
Customer Service of the highest order.