Just to give you an update - Velodrama (the Soma-dealer) kindly suggested that they would cover the cost for repairing the frame at my local bike shop.
My bike dealer told me that there is nothing wrong with the frame except the dropout needs to be bent back and the paint has to be redone, which would however cost about 50 - 100 Euro (which seems a lot to me for such a little spot?).
Now I have to wait what the guys at Velodrama think about that.

I'm still grumpy that my poor little frame was damaged before it even got its wheels