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

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 by checking your payment info and iOS Subscriptions. Remember, canceling the subscription doesn’t give you a refund automatically. To request money back, go to reportaproblem