Someone changed my country to China. How can I change this back?

Someone obvioudsly cracked my AppleID

Now I can only visit Chinese Apple Store!!!!

I wanted to change this back, but I have to enter a valid Chinese ZIP Code.

Do I really have to settle in China only to enter my valid home country???

I also had to enter my payment information.

What if someone else uses it now?

This all is NOT user friendly!

It's only good for Apple in China.