I just checked and it looks like your post is still active in our support forums. You should be able to navigate to the support forums by looking at the panel to the right under the "discussions" tab.
Repeated griefing is definitely a bannable offense - please be sure you're reporting these folks through the in game tool, or if you want to be more thorough report them directly through support here[support.ubisoft.com]
Hey pillar, we are taking all reports of DDOS and lobby freezing on our forums here[forums.ubisoft.com]. It's something we are aware of and trying to get as much feedback on as possible.