If Apple billed your SuperGrok subscription by mistake, go to...

https://fun-wiki.win/index.php/Can_Apple_Support_Help_If_I_Have_the_Receipt_Date_but_No_Invoice_Number%3F

If Apple billed your SuperGrok subscription by mistake, go to reportaproblem.apple.com to request a refund. Navigate to Settings > your name > Subscriptions on your iPhone to manage or cancel, but remember canceling won’t give you a refund automatically