If you see 'itunes.com/bill' or an unfamiliar charge on your statement
View your purchase history to investigate charges that you see on your bank, credit card, debit card, or mobile billing statements.
Before you contact Apple to request a refund for a charge you don't recognize,
check your purchase history and follow the steps below.
If you don’t recognize the amount on your statement, multiple purchases might be grouped into one charge, even if you made the purchases on different days. You might not receive a separate email receipt for each purchase. Sometimes the charges appear on your statement a few days after the purchases were made. Learn about how purchases are grouped.
In addition to music, movies, TV shows, stickers, and apps purchases (from the iTunes Store and App Store) that are billed at the time of purchase, your statement might also include in-app purchases, pre-ordered music or movies, and automatically renewing subscriptions.
Compare your purchase history with the charges on your statement
To view and search your purchase history, click or tap this link: View Purchase History.
In your purchase history, you can see which payment method was charged.
If you're not currently signed in with the same Apple ID that you use to make purchases in the App Store and iTunes Store, if you're using a different device, or if you don't see your purchase, learn how to view your purchase history on your iPhone, iPad, iPod touch, Mac, or PC.
You can also use reportaproblem.apple.com to review your purchase history and receipts.
The Report a Problem website shows most subscriptions, except those for Apple services and iCloud storage charges.
Check the status of your subscriptions
Make sure that your charges aren't for a subscription that you or a family member set up.
To view and manage your subscriptions, click or tap this link: Manage your subscriptions.
If you're not currently signed in with the same Apple ID that you use with the subscription that you want to manage, if you're using a different device, or if you don't see your subscription, learn how to view, change or cancel your subscriptions. If you don’t see your subscription, you might be billed directly through the provider instead of Apple. Contact the provider to cancel.
Deleting an app doesn't cancel a subscription.
Check all of your Apple IDs
If you ever added a payment method to another Apple ID, the unrecognized charges might have been made using that account. Check the Purchase History of each Apple ID that uses your payment method.
If you can't remember if you have another Apple ID, we can help you find out.
To stop charges with that Apple ID, you can restrict in-app purchases or turn on restrictions (parental controls) on your iOS device, in iTunes on your Mac or PC, or on your Apple TV.
If you share your devices
If you share your device with others, including young children, learn how to manage your password preferences.
If you share your device with others who have their own devices, you might want to set up Family Sharing.
If anyone else has your Apple ID password
Anyone who has your Apple ID password can make charges to your account. If you have unauthorized charges, change your Apple ID password.
If you see 'itunes.com/bill' or an unfamiliar charge on your statement ...
https://support.apple.com/en-us/HT201382