Unauthorised purchases

Nobody here will know.

Request a refund for apps or content that you bought from Apple - Apple Support

You may wish to 'Require a password for App Store and iTunes purchases' --> https://support.apple.com/HT204030 or 'Use parental controls on your child's iPhone, iPad, and iPod touch - Apple Support' --> https://support.apple.com/HT201304 "to block or limit ... features on your iPhone, iPad, or iPod touch"

"You can use Screen Time to prevent unintentional or unauthorized purchases from the App Store and other Apple services. You can require a password for purchases, prevent certain types of purchases, or disable purchasing completely." - https://support.apple.com/HT204396 See how to 'Use Screen Time on an iPhone, iPad, or iPod touch' by clicking here --> https://support.apple.com/HT208982

Just FYI:

The people responding on this support forum are users like you and we only know what Apple says in its documentation and what our own and other users' experience tells us. Apple does not have much on its criteria for refusing refunds. Here are two sections from the September, 2020 Apple Media Services Terms and Conditions - https://www.apple.com/legal/internet-services/itunes/us/terms.html

- "All Transactions are final."

I understand this as meaning Apple is starting from a point where any refund is considered an exception. They can simply say no without having to provide a reason. I understand this can be frustrating but by using the service you agree to the terms.

- "From time to time, Apple may refuse a refund request if we find evidence of fraud, refund abuse, or other manipulative behavior that entitles Apple to a corresponding counterclaim."

You can see if the terms are different for where you live by clicking on this link https://www.apple.com/legal/internet-services/itunes/ select your location and then your language.

If you feel you want to discuss a refund request, try to contact a live person using a telephone or chat request.

Click here --> https://support.apple.com/choose-country-region/media-services Select your country, then a product. If you don't see one that handles your issue then keep experimenting with selections until you reach one that gets you a chat session or a telephone call and get the representative to redirect you.

or:

Contact Apple for support and service --> "See a list of Apple phone numbers around the world." Click here --> https://support.apple.com/HT201232

As I said, Apple doesn't really say anything specific but from what others have said in posts here (and I presume not everybody on the Internet is lying about everything) 64 refund requests might ring some bells and you may have to talk to a real person and try to explain the issue.