unauthorized charges on my credit card

Unknown Charge?

1. App Purchase
   1. Curious about a Charge? --> If you see an 'itunes.com/bill' or an unfamiliar charge on your statement
   2. If you have an issue with an app on App Store or billing --> Request a refund for an App Store or iTunes Store
2. Subscriptions
   1. You may view a subscription to an app --> See or cancel your subscriptions - Apple Support
   2. You can also request a refund for a recent renewal of an in-app subscription purchase 

Avoid accidental purchases

1. If it is your device then, please --> Use Guided Access with iPhone, iPad, and iPod touch - Apple ... before handing over a device to a child.
2. If it is your child's device then in the future, enable the Ask to Buy feature --> Request and make purchases with Ask to Buy - Apple Support

It could be Phishing

• Beware of --> Phishing & Other Suspicious Emails 
• Know how to --> Identify legitimate emails from the App Store or iTunes Store 
• Avoid phishing emails, fake 'virus' alerts, phony support calls, and other scams —> Use these tips to avoid scams and learn what to do if you think your Apple ID has been compromised.

If the charges are from Apple:

If you were charged by Apple for something there are a few possibilities:

• You installed an app that required a subscription; the subscription is activated automatically when you download the app
• You purchased it from the app store (or subscribed to a service) and forgot you did
• Someone you share your phone with purchased it from the app store
• Someone you share your Apple ID with purchased it from the app store
• If you have a family sharing plan, someone in your family purchased it from the app store
• Your Apple ID was hacked and the hacker made a purchase from the app store - for this one see →If you think your Apple ID has been compromised - Apple Support
• You were not actually charged for anything; the message you got was a scam to steal your identity - see →Avoid phishing emails, fake ‘virus‘ alerts, phony support calls, and other scams

The bottom line is that Apple never charges you for any purchase without authorization. So someone with access to your account must have made the purchase or subscription, if it wasn’t a scam message.

If it is a specific item on your bank or credit card statement see this link →If you see "apple.com/bill" or an unfamiliar charge on your statement - Apple Support

You can review all of your purchases as described in this link →See your purchase history for the App Store or iTunes Store - Apple Support

If it is a subscription you can cancel it here →See or cancel your subscriptions - Apple Support.

Note that subscriptions are not canceled when you delete an app; the subscription must be canceled separately from deleting the app.

If the charge was made in error you can request a refund here→Request a refund for apps or content that you bought from Apple - Apple Support