Refund

You can require all you want, but no user in this user-to-user forum can do that for you. Follow the instructions already posted.

And note that If you were charged by Apple for something there are a few possibilities:

• You installed an app that required a subscription; the subscription is activated automatically when you download the app
• You purchased it from the app store (or subscribed to a service) and forgot you did
• Someone you share your phone with purchased it from the app store
• Someone you share your Apple ID with purchased it from the app store
• If you have a family sharing plan, someone in your family purchased it from the app store
• Your Apple ID was hacked and the hacker made a purchase from the app store - for this one see →If you think your Apple ID has been compromised - Apple Support
• You were not actually charged for anything; the message you got was a scam to steal your identity - see →Avoid phishing emails, fake ‘virus‘ alerts, phony support calls, and other scams

The bottom line is that Apple never charges you for any purchase without authorization. So someone with access to your account must have made the purchase or subscription, if it wasn’t a scam message.

If it is a specific item on your bank or credit card statement see this link →If you see "apple.com/bill" or an unfamiliar charge on your statement - Apple Support

You can review all of your purchases as described in this link →See your purchase history for the App Store or iTunes Store - Apple Support

If it is a subscription you can cancel it here →See or cancel your subscriptions - Apple Support.

Note that subscriptions are not canceled when you delete an app; the subscription must be canceled separately from deleting the app.

If the charge was made in error you can request a refund here→Request a refund for apps or content that you bought from Apple - Apple Support

1.

For sure check -> see the following Apple articles:

View your purchase history for the App Store, iTunes Store, and other Apple media services

View your purchase history for the App Store, iTunes Store, and other Apple media services - Apple Support

How apps, content, and subscriptions from Apple are billed

How apps, content, and subscriptions from Apple are billed - Apple Support

If you see "apple.com/bill" on your billing statement

If you see "apple.com/bill" on your billing statement – Apple Support (UK)

2.

If you see an unexpected charge: 

You can request a refund* for a purchase that you don't recognize, but you must pay for the purchase first. You can also cancel a subscription if you don't want to continue it.

*You must request the refund within the refund period.

Refunds are not guaranteed. For more information, see the Terms & Conditions.

3.

I have charges that have not been authorized.

a.

Is the invoice from Apple?, tap on Report a problem on the invoice.

b.

If the invoice is not from Apple, was the money deducted by a stranger?

Contact your bank, they can find out who (name, address & account number) has collected the amount from your bank account, and when.

Depending on your bank, they can collect the amount back within 30 days.

Ask you ank to block your card, and ask a new card.

Also report to the police.

4.

See -> Identify legitimate emails from the App Store or iTunes Store

Identify legitimate emails from the App Store or iTunes Store - Apple Support

you can try

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

or contact their support

Apple Support