I have a positive story to share as well.
Recently, I purchased an e-book from the Kobobooks store that turned out to be in PDF format, instead of the expected epub. This had nothing to do with the new store design (I still see the formats listed) and was simply the result of me not paying attention. I don't find PDF usable on the Glo, however, so I wrote in and asked if I could return it, not really expecting much since this was mostly my fault and I was prepared to suck it up. Still, €11 is €11, I felt, so why not ask.
Within a day, I received a response from the T2 support -- and a refund, without any difficulties or the "we make you ask three times before we give in" ordeal that I am used to from other (unrelated) companies. This was my first experience with their customer support, and I can't complain. Certainly smoother than I had feared.