Well, there's a couple things you can do to fix this.
1. Increase your accuracy. Ice wizards can get more accuracy at higher levels. 2. "Wand" off the accuracy debuff. 3. Have a teammate use a cleanse on you.
You can also get a pet that gives you ice accuracy. However, I never really see them, because it's never too big of an issue. Other people hatch a PvP pet, consisting of damage, resist, and sometimes critical. So if you're looking at increasing accuracy w/o changing your pet, this wouldn't be the way to go.