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 discretionary, not a right.
On your 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
Where subscriptions are concerned, you should try to spend a few moments reviewing this document which explains how you can view, change or cancel them.