You can't even get refunds in their online store, period.
Once bought a game by accident, realized it wouldn't work (local-only party game, thought it was online), immediately requested a refund, and they flatly refused the refund because it was already downloaded and they claim the contract has been fulfilled.
Even if they're legally in the right (remains to be seen, they're currently being sued over this exact thing by a German watchdog), it felt very hostile and I'm not ever buying from them again.