Over the last week or so, I am seeing ALOT - SERIOUSLY LOADS - ofThreads on reddit pop up regarding botters in hearthstone and the amount of people they are coming across, especially ones playing pirate warrior.
I would recommend doing what I am doing ( as long as you don't want to lose your account) and lay low for a while.
Eventually Blizzard will react and throw out a ban hammer.
Just a word of caution.