[English] I can't change subscription?

I moved to Germany for one year and there my cell broke, so i bought a new one with 20GB (5€) and a 32.50€ down payment on my phone. Now that i no longer live in Germany, i would like to change so that i don't have to pay for a subscription of the data plan or calling & texting fees because i really need to switch to one of the Norwegian data plans. I have Dual Sim so this should work fine. But it would be too expensive for me to pay 50€ a month and at the same time pay for a data plan in Norway.

So the Question,

Is there a way so i only pay for the downpayment for my phone? 

And i don't know German that well so try to reply in English.

Thank you, Fred

edit o2_Tobias: moved from o2 Mobilfunk: Vertrag & Tarife to our English Community (mobile)