Premium items will not be purchased without your permission unless you perform an operation on your account.
Therefore, if there is a transaction that you do not recognize on your account, we kindly ask that you confirm first with your family members or people who have access to your account.
Please note that transactions made through the App Store may be billed in bulk at a later date.
For more details about your transactions, either review your billing history on the App Store, or contact Apple directly for support using the link below.
Apple Support: https://support.apple.com/