[bbki]

You have to contact them manually
I did that before with sniper game once and luckily I cancel it in time.
You may have to wait a little bit for respond (Mine was 3 day back then)
They once told me that there is only person in the office that can respond in English
Maybe you can try use google translate into German and they maybe they will respond.

If they already ship, brace yourself for 6-8 weeks of transportation