I don't know if you have spoken with the GMs. They already mentioned that the second class skills are bugged in PVP and they have notified the developers about it. Now, it's not their fault that there are still buggy skills. IMO, that only means the developers haven't sent them a solution/patch to fix it yet. So instead of pestering them about the skills, let's just wait for a fix.
Before I forget, while you wait for a patch to fix the damage in PVP, do consider going out to do PVE. Wizards can deal tons of damage with 1 skill so it's good to bring down monsters with high HP. Just go back after casting your spell and wait for cooldown. Also, don't hit the monsters first in you are in a party because doing so will attract a lot of aggro from those monsters and they will chase you. Just wait for a defender to provoke them and get their attention. Some Wizards don't know that and that's why they die first during Raids.