Hi There. I am Bing and I look forward to helping you with your issue today.
Please first log on from here: https://appleid.apple.com.
Then change your CC info at its Payment & Shipping section.
Can you please advise if you have successfully changed your credit card info from the option given above? Thanks.
May I have any feedback please? If my answer is satisfied, please kindly accept and provide an positive rating. Thanks.