Exactly Jo, we've been impressed.
The first time was a guitar hero game that came with a free guitar (a super-dooper one), opened on Christmas day and the guitar didn't work
Emailed same day, reply Boxing day saying a courier would collect it within 3 days and with a label to print out. It was sent to Germany and returned (or a new one, we don't know), within a week!
The second time was when I sold them some games; the co. that handled them said two of them were 'not as described' and would be returned.
A week later, neither had come back, and anyway I knew very well they were as good as new.
Amazon refunded me the full resale prices, and said they could see on their system that they were in 'excellent' condition, so as with your delivery, they knew then something wasn't right. And a couple of days later, the games came back too