Payment for iCloud storage.
Apple informed me they did not get payment on my iCloud storage. I now have enough money on my iTunes account. How do I pay for my iCloud storage using my iTunes account?
How App Store and iTunes Store purchases are billed. Click here --> https://support.apple.com/HT201359
"Which payment method is charged?
When you buy items or pay for subscriptions, Apple automatically attempts to charge your payment methods in this order:
...
- If there's a problem with the primary payment method, or if the primary payment method can't be charged for the full remaining amount, Apple attempts to charge your other payment methods in order from top to bottom. If none of them can be charged, Apple may try again.