How do I get a refund for an accidental 'Trendy' app purchase on iPhone?

Remember that as it says at the bottom of this page, the people here are customers like you, not Apple.

Review the information in this support article by clicking on the link to learn how to cancel a subscription from Apple. ➔ If you want to cancel a subscription from Apple - Apple Support

Notes:

• "If you signed up [which involves very intentional steps by you or a user of your device, accompanied by warnings along the way] 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." Note that by using an app like this you are automatically agreeing (always read the fine print) to this happening, are responsible for reading if this will happen, and canceling the subscription before the trial ends. E.g., https://discussions.apple.com/thread/256230049?answerId=261793271022

• Deleting an app does not cancel a subscription.

• An existing subscription will normally continue until the end of its term and may then renew automatically. Stopping automatic renewal is effectively canceling it. "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. Note special conditions for some countries: About canceling subscriptions in Germany, Israel, South Africa, or Türkiye - Apple Support

• Read the article to see what to do about subscriptions that do not appear in your list. If you still can't find a subscription, contact Apple Support using the link at the end of the support article.

• Canceling a subscription does not automatically start a refund.

• If you had a free trial previously, you do not get a second one and a subscription will start immediately.

• This thread (particularly posts by MacJimID) outlines complex scenarios regarding subscriptions and trials. ➔ Refund request for unintended Snapchat Pl… - Apple Community

If you wish to pursue a refund, follow the directions in this support article about how to request a refund for apps or content that you bought from Apple ➔ Request a refund for apps or content that you bought from Apple - Apple Support According to Apple’s terms, refunds are only made to remedy defective or unavailable product. You can request a refund on other grounds but those refunds are entirely discretionary and not guaranteed. Special terms also apply for some countries: About canceling subscriptions in Germany, Israel, South Africa, or Türkiye - Apple Support

Read this support article for information about how long it takes to receive a refund (if one is granted), and how to check the status of a refund for apps or content that you bought from Apple --> Check the status of a refund for apps or content that you bought from Apple - Apple Support

Missed the part about having been denied twice.

This is a user to user support site. The people responding on this support forum are users like you. We have no special access to Apple information or your accounts, so unfortunately all we can do is guide you to the information Apple does provide. In Request a refund for apps or content that you bought from Apple - Apple Support Apple says that, “Some purchases from the App Store, iTunes Store, Apple Books, or other Apple services might be eligible for a refund.” Apple, however, does not detail its criteria for refusing refunds. Below are two sections from the U.S.A. version of Apple Media Services Terms and Conditions - Legal - Apple Media Services - Apple You can see if the terms are different for where you live by clicking on this link Legal - Apple Media Services - Apple then select your location and then your language.

- "All Transactions are final."

Apple's terms of purchase in the USA are, "All Transactions are final," ( Legal - Apple Media Services - Apple section B), but check the terms for your country. Even if Apple does not outright say in a country that sales are final, they may say that refunds are only made to remedy defective or unavailable product. In other cases Apple may make limited refunds solely at their discretion and as an exception. Apple can also 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 suspend or cancel payment or refuse a refund request if we find evidence of fraud, abuse, or unlawful or other manipulative behavior that entitles Apple to a corresponding counterclaim." Remember that Apple has no way of removing a purchase from your device. They have to trust you are being honest when asking for a refund. It may be that certain refund requests might be considered suspicious or excessive.

According to https://reportaproblem.apple.com/static/en-us/privacy.html , Apple uses an automated system to detect fraud. Your request may not have met the automated system’s criteria for a refund. In the article Apple says, “If you disagree with your final decision, contact dpo@apple.com “ However, according to user posts on this web site the result is confusing because you receive an automated response talking about privacy issues, not refunds. In that case:

If you have been denied twice and it says the decision is final then in my opinion it is pointless contacting Apple. If you still wish to try a telephone or chat method, click here --> Choose your country or region - Official Apple Support 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:

"See a list of Apple phone numbers around the world." Click here --> Contact Apple Support - Apple Support

Understand that these forms are user-to-user and that you are not addressing Apple here. If the refund was denied twice no one here can help you. We do not have access to your account details.