How to get reimbursed for faulty iTunes app purchase.

Hello:

I tried to purchase an app via iTunes on and on the app store on the iPhone. I tried to buy the same app repeatedly because iTunes kept asking me to correct my credit card info. The app never got downloaded so I gave up to try again in a day or so. My credit card company called me to inquire about some strange activity on my card.... multiple individual purchases for the same item in iTunes. My credit card company said I need to contact Apple to get reimbursed. I sent an email to Apple's iTunes support account but have not heard any feedback in a day or so. I could not find a phone number related to this kind of an issue. Does anyone know how I can best contact Apple or get some resolution to this issue?

Thanks,
mn3