Hello Angelhui
You cannot reach Apple directly through these columns as they are manned by volunteers, users, much like yourself.
However, we can help you … but do be aware that although Apple usually treat requests sympathetically where a genuine mistake has occurred, refunds are at Apple’s discretion, not a right.
If you have received an unexpected email advising you of a charge, read this document for guidance.
https://support.apple.com/en-gb/HT204759
If you have an APPLE electronic receipt you will see an invitation to ‘Report a problem’.
Report what you say here as your problem and Apple will contact you.
If for some reason you do not have a receipt, follow the instructions in this Apple document where a similar ‘Report a problem’ link is offered. https://support.apple.com/en-gb/ht204084
Where subscriptions are concerned, you should try to spend a few moments reviewing this document which explains how you should view, change or cancel them.
https://support.apple.com/en-gb/HT202039