Here we go again. Terrahash != Sony. Common sense fails you too.
Anyone who pays for anything with a credit card can do a charge back if they're not happy with what they got. That's how it works. Doesn't matter if you're Sony or a custom hardware company or what. If you're not happy with it, don't take credit cards. You don't see BFL taking them, do you?
Now this is very true. Can't argue with that at all.