Does WG do anything with unsportsmanlike conduct (tickets)?

CabbageMechanic: Yes, we do.  No, we can't tell you what happened to the player you reported.  I have personally handed out several thousand bans this year for Unsportsmanlike Conduct/Physics Abuse etc.  Everything from barrel-in-barrel exploiting SPGs to banning a whole platoon of O-I's for boxing teammates to mess with them.  If you see it, and you submit a replay, we will investigate, and we will take the appropriate action.

The new policy is a lot less forgiving, and repeat violators will quickly be facing extensive ban time.  You can find more information here 

So please.  Keep reporting.  The quicker violators rack up strikes the quicker they will correct their behavior or be banned from the battlefield.