Q: How can I get a listing for charges showing on my credit card?

You can view the purchase history on your account via the Store > View Account menu option on your computer's iTunes, though I'm not sure if that shows auto-renewing subscriptions (http://support.apple.com/kb/HT4098). If you dont recognise the charges then you could try contacting iTunes support and see if they can help : http:/www.apple.com/support/itunes/contact - click on Contact iTunes Support on the right-hand side of the page, and then Purchases, Billing & Redemption