Hearthstone won't update

I don’t know if this should be on the Hearthstone forums, but here’s the problem. Hearthstone won’t update because it’s waiting for [battle.net](http://battle.net) to update but [battle.net](http://battle.net) just keeps saying 0%. It never changes its percentage. Until it updates, Hearthstone is unplayable. Is there anything I can do?