If you want a refund for SuperGrok, first make sure Apple actually billed...

https://bizzmarkblog.com/how-do-i-request-an-apple-refund-for-supergrok/

If you want a refund for SuperGrok, first make sure Apple actually billed you—it might show up in iOS Subscriptions. Remember, canceling the subscription stops future charges but doesn’t refund past payments. To request a refund, visit reportaproblem