The CSS community is a lot different than the 1.6 community. I dont mean that in a bad way either. Both communities have its pluses and minuses.
The simple fact is, your demo showed you hacking. You can deny it all you want, your appeal was denied, and you wont be unbanned.
For what its worth, I’m sorry you cant play Source at WCU anymore. It’s a badass fun game. On the other hand, hacking is ridiculous. If you have to hack to play, why are you even bothering?
Anyways, have a nicer day.