Additional costs charged in the bill

I've just seen my first bill and appeared the following extra charges:

Einmalgebühren Anschlusspreis Option HomeBox 2 42,0084
Einmaliger Anschlusspreis O2 DSL 42,0084
Versandkosten - 8,3949

I signed up one month ago and there is a discount 100% Rabatt auf Anschlusspreis DSL-Router of 42,0084.

However the other value of 42,0084 as well as the 8,3949 are still there and I don't know why. These extra costs do not appear in my contract as well, so why am I being charged?