Redpath's shoe store, here in Canberra. I bought a pair of black and white Diesel high-top sneakers there in April, wore them (not all the time, but a fair amount) for four months... and last week discovered that they were different sizes.
The left one was U.S. size 9, European size 42, and Japanese size 27, while the right one was U.S. size 9 but European size 40 and Japanese size 26. I hadn't noticed anything odd the whole time, but once I knew they were different sizes I couldn't stop
I really didn't think they could/would do much for me, because I mean, four months worth of slight but visible wear on them. And I'd bought them on sale, so I figured they might not have that style any more. Still, I called and they told me to bring them in. Turns out they were out of that colour but not that style, and I now have a brand new pair of pink and white high-tops that are both European size 40.
I would have been perfectly happy with something like a discount on my next pair of shoes but the manager was very matter-of-fact about saying it was their mistake. Annnnnd they had a sale on boots, and I found a pair in a style I had years ago and loved, so now I have new boots as well.