Game froze/crashed during a purchase, resulted in hundreds of dollars charged to credit card!

Question

I Was in a game (Galaxy Legend) making a $19.99 purchase of premium currency when the app suddenly froze up on me. I tapped the screen a few times, nothing, used the home screen button, but it seems that whatever caused it actually locked up the entire iPad (128GB iPad 4 running iOS 7.0.4 (11B554A).
I Was about to do a hard restart when the game simply crashed and everything was once again working like normal. I did the restart anyway, simply because I find it does seem to make things run better overall if you power cycle at least once every week or two.
Anyway, when I launched the game again I noticed that I had quite a bit more than the $19.99 I had set out to buy. I haven't done the math yet, but my guess is it have me hundreds of dollars worth.
I only had a couple hundred credits at most in game, and I was buying around 2700-2800, but when I came back in I had over 45,000!!! That would be like three of the $99.99 options (which have 15,000 credits I believe), and would cost $300!!!
It hasn't shown up on my card yet, it likely won't until Monday seeing as today is a National Holiday here in the US, so you can expect it to be a long holiday weekend where nothing gets done.
I Guess the question is if I should just go directly to the credit card company about it, or wait until I can talk to someone at apple? I know they are pretty good about fixing this sort of stuff, but I can't even find the chat support option, and I was just talking to them today about connection issues with the itunes store.
Are there special hours that chat support is available?

Answer 1

Does anything show on your account's purchase history ? If you log into your account on your computer's iTunes via the Store > View Account menu option, you should then see a Purchase History section with a 'see all' link to the right of it. Click on that and you should then see a list of your purchases (the most recent purchase is above the list).
If it does then try the 'report a problem' page to contact iTunes Support : http://reportaproblem.apple.com
Or, and if there are multiple items on your purchase history, you can try contacting iTunes Support via this page (they will probably want the order numbers from your purchase history) : http://www.apple.com/support/itunes/contact/ - click on Contact iTunes Store Support on the right-hand side of the page, then Purchases, Billing & Redemption (contact methods depend upon the topic, your country, and possibly the time of day)