Tiffany & Co. review: Customer service

I am in awe of the horrible reviews of this company. I had my own awful experience but had no idea so many others have experienced the same. Tiffany and Co should be so ashamed of themselves for charging high dollar costs and providing essentially no customer service. My boyfriend does not shop online EVER, so he called Tiffany's 800 to order a bracelet for my birthday. After spending over $700 for a charm bracelet and an engraving on the heart charm, Tiffany advises that it's not exchangeable for the next size up. My wrist is large so the standard medium doesn't fit. I wrongly assumed that I could just call Tiffany's and get an easy exchange for the large and they would transfer the heart charm to the larger size. Oh no. The profit they made on an overpriced $700 bracelet isn't enough. They want another $70 to fix this issue so that I can actually wear the bracelet. I have better customer service experience with Walmart, Dillard's, Macy's, you name it. This overhyped brand doesn't meet expectations. What exactly are we paying higher prices for if not for customer service?