I got married so last name changed
my last name changed and I need to update card info on account.
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You will need to update the billing information associated with your Apple ID.
Follow the steps in Apple's support document Change, add, or remove Apple ID payment methods. It has examples on how to do this using an iPhone, iPad, or iPod touch; a Mac; a Windows PC; or an Android phone.
You can also update your information by signing into your account at Manage your Apple ID.