Hi
As you have been charged for an amount, as reflected on your bank statement, and you do not recognise what the charge relates to, follow the instructions here:
iTunes Store charges on bank, credit, and debit card statements - Apple Support
If you still don't recognise the charges, then contact iTunes Support for assistance:
Contact - Official Apple Support
(I'm afraid that no-one here can look into your billing issue to assist you directly. This is a user-based technical support community - you are not talking to Apple here).