I've recently registered to the Mac Store and provided the credit card though I didn't plan to buy anything immediately. Some people say that there is an option "no card" when registering, but I didn't know that, so whatever. After the registration I was charged 2 euros, without any explanations.
I've searched throughout the Apple's website but I cannot find any way to contact the support. I am all the way redirected to some manuals, while the support with the real people seems to be available for the devises' sales only.
All of this is not about the 2 euros, but about the disappointing experience.