Nemisis Draft

It's happened twice now and I wish I would of taken a screenshot the second time but it kinda enraged me cause now I have a 2 hour ban. When it comes to my turn to pick the enemy champ, both times I disconnect from the chat and PvP.net client causing me to bug out of the game but then come "back in" but I end up having to close the pre-game lobby down because its frozen on me having to pick cause it kicks me out when its my turn. Any similar reports or problems, and if so any way to fix this or my ban that I cringe to have because this is the first time ever I've gotten bans like this and its really upsetting when I just wish to play the new game mode.