apple won't accept my renewed credit card w same number but new date and new code number--what to do?

Wondering if Apple support's online article can be of any help:

(You may need to add a new card before you can delete an old one)

How to change an Apple ID payment method:

If you need to change or update your Apple ID payment method - Apple Support

You could also try logging in to your account online, and changing the details there:

https://appleid.apple.com

If needed: How to: Get a verification code and sign in with two-factor authentication - Apple Support

More info. / suuport / contact:

Billing and Subscriptions Support Team have a "Get Support" link at the bottom of their webpage (link below)::

Subscriptions and Billing - Official Apple Support

Happens all the time when you keep card balance at zero they blacklist work around add another card to clear the cache and then enter blacklisted card again.