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

https://shed-wiki.win/index.php/SuperGrok_Charge_Shows_Up_But_the_App_Isn%E2%80%99t_What_I_Expected_%E2%80%93_Can_I_Request_a_Refund%3F

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