I have read this article.
But it is not affective for my iPhone.
Change, add, or remove Apple ID payment methods - Apple Support
Please let me know how to remove old payment method.
I am using iPhoneSE2 iOS 15.4
iPhone SE, iOS 15
Try this -> Sign in to your Apple ID account page and edit your Apple ID details.
On the Sidebar click Payment methods -> then tap Payments Methods and tap Manage payment method.
Try this -> Sign in to your Apple ID account page and edit your Apple ID details.
On the Sidebar click Payment methods -> then tap Payments Methods and tap Manage payment method.
Thank you so much.
How to remove a payment method
