How do I cancel a accidental purchase?

Hello.

How to cancel a subscription on your iPhone, iPad, or iPod touch

1. Open the Settings app. 
2. Tap your name. 
3. Tap Subscriptions.
4. 
5. 
   
6. Tap the subscription that you want to manage. Don't see the subscription that you're looking for?
7. Tap Cancel Subscription. (Or if you want to cancel Apple One but keep some subscriptions, tap Choose Individual Services.) If you don’t see Cancel, the subscription is already canceled and won't renew.

Cancel a subscription on your Mac

1. Open the App Store app.
2. Click the sign-in button  or your name at the bottom of the sidebar.
3. Click  View Information at the top of the window. You might be asked to sign in.
4. On the page that appears, scroll until you see Subscriptions, then click Manage.
5. 
6. 
   
7. Click Edit next to the subscription that you want. Don't see the subscription that you're looking for?
8. Click Cancel Subscription. If you don’t see Cancel Subscription, then the subscription is already canceled and won't renew. 

Cancel a subscription on your Apple Watch

1. On your Apple Watch, open the App Store.
2. Scroll to Account and tap it.
3. Tap Subscriptions.
4. Tap the subscription that you want. Don't see the subscription that you're looking for?
5. Tap Cancel Subscription. If you don’t see Cancel Subscription, then the subscription is already canceled and won't renew. 

Cancel a subscription on your Apple TV

On Apple TV, you can edit subscriptions only for tvOS apps that are installed on that Apple TV. For Apple TV (3rd generation or earlier), use an iOS or iPadOS device or computer to manage your subscriptions.

1. Open Settings.
2. Select Users & Accounts, then select your account.
3. Select Subscriptions.
4. Choose the subscription that you want to manage, then select Cancel Subscription. If you don’t see Cancel Subscription, then the subscription is already canceled and won't renew.

If you don't have an Apple device

• You can use a PC to cancel subscriptions from Apple.
• You can cancel Apple Music on the web.
• You can cancel Apple TV+ on the web.
• If you don’t have a PC and you want to cancel a different subscription from Apple, contact Apple Support.
•  

About canceling subscriptions from Apple

• Most subscriptions automatically renew unless you cancel them.
• If you cancel a paid subscription, you can keep using the subscription until the next billing date.
• If you cancel during a free trial period, you might lose access to the subscription immediately.

If you signed up for a free or discounted trial subscription and you don't want to renew it, cancel it at least 24 hours before the trial ends.

If this is a subscription then please read this link to learn "How to cancel a subscription from Apple" Click here --> https://support.apple.com/HT202039

Note:

• "If you don’t see Cancel Subscription, then the subscription is already canceled and won't renew." The "Expires" date means the current subscription will just run until then.

• Deleting an app does not cancel a subscription.

• If you don’t cancel trials more than 24 hours before your renewal date, your subscription might renew.

• If you don't have an Apple device, see the options near the very bottom of the support document

"If the subscription that you want to cancel is not listed", click here --> https://support.apple.com/HT212052

If you still can't find a subscription, contact Apple Support using the link at the end of the support article.

If you wish a refund for either a purchase or a subscription, click here to Report A Problem --> https://reportaproblem.apple.com/?s=6

Or click here --> https://support.apple.com/choose-country-region/media-services Select your country, then a product.

You may also wish to 'Require a password for App Store and iTunes purchases'. Click here --> https://support.apple.com/HT204030 or if this his device: Use Restrictions on your iPhone, iPad, and iPod touch - https://support.apple.com/HT201304 - "You can use Restrictions, also known as parental controls, to block or limit specific apps and features on your iPhone, iPad, or iPod touch, including access to explicit content in the iTunes Store."

Here is a one-stop-“shop” for iTunes & App Store purchase issues→Subscriptions and Billing - Official Apple Support