iTunes.com/bill
Whats this charge to my American Express $21.93
Question marked as
Sign into your Account > Click on your account name > Click on Account > Purchase History
See your purchase history in the iTunes Store on a Mac or PC - http://support.apple.com/HT204088 - Does not include purchases made by others under Family Sharing; those have to be checked from their accounts.
If you see ‘itunes.com/bill‘ or an unfamiliar charge on your bank, credit card, or debit statement - https://support.apple.com/HT201382 - "Before you contact Apple to request a refund for a charge you don't recognize…"
If you think there really is something that shouldn't be there:
Report a Problem - http://reportaproblem.apple.com - "Sign In for help with iTunes purchases made in the last 90 days"
Other ways to contact iTunes Store Support:
https://www.apple.com/emea/support/itunes/contact.html
https://support.apple.com/contact