Just sent a text message to my local pro and asked if DQ was not the right thing since I returned a score card that was wrong. He said yes and stated that I showed great integrity and was the "moral" winner (not sure how this expression goes in english.

I actually don't care anymore. I played very well and could have done even better. So I got the feedback I needed. And with my enthusiasm I know I will put myself in position to win that tournament many more times.