If you subscribed to ABCmouse Classic through Verizon, your billing is managed directly through your My Verizon account. You can update your payment method anytime to avoid interruptions to your subscription.
Follow these steps:
Sign in to your My Verizon account.
Select More, then tap the Settings icon.
Scroll to the Payments section and choose Manage payment methods.
From here, you can add, update, or remove your payment details.
If you still require further assistance with your Verizon subscription, please contact them directly.