How to contact Apple for the Mac store billing support? 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.
It's a three step process - with pictures below!


Click support in the Quick Links tab
on the right hand side of the App
Store app.
Click billing in the web page
that opened as a result of step 1.
Feed in all the information and wait
the 24 hours or so it takes to get
an initial response.


It is so worth it to ask for a refund or help (especially in your case where you didn't intend to buy yet) - everyone wins in the end as developers and Apple really don't want a sale that ends up with an unsatisfied customer. 

The system is not perfect nor is it set up to allow previews of purchases, so no one should feel bad requesting a refund or two. Especially so if the program wasn't explained well or is seriously faulty. Would you want a $ and change if it made someone have a lasting bad impression of the work for which you get paid?

Do feel bad if you find yourself abusing the system or on your 10th refund request with no good reason and just not getting the picture.