Apple has been selling closed-source knock-off of my GPL app for 6 months after acknowledging they've received my takedown request. They've eventually took it d

Apple has been selling closed-source knock-off of my GPL app for 6 months after acknowledging they've received my takedown request. They've eventually took it down, but they haven't notified users and kept the money. I've asked sfconservancy and fsf for help, but they wouldn't take the case.