I had 9 double charges on my bank account yesterday morning. It put my account well in the negatives. About 3 combined hours on the phone with my bank and Coinbase to sort this out. Luckily, it got cleared up and I had my money back in my account this morning. But yesterday totally sucked for me.
I wrote a post last night about my ordeal. And updated it this morning. Check it out if you want.