I do appreciate your time and effort in updating your payment account. There are also times that changes within your account will not reflect right away that's why it's still verifying on the old phone number. We can refresh the system by performing a few browser troubleshooting steps.
Try logging in to your Intuit Account through a private browser. If you're able to successfully submit your updated payment account, switch back to the main browser and clear the cache. You can also try using other browsers to get rid of unusual responses.
I'd suggest reaching out to us so we can help you with updating it securely.
Here's how to contact us:
Go to the Help menu and click Contact us.
Enter a brief description of your corner something about changing payment account.
You can select a convenient option you'll want to connect with us.
For more details in handling your Intuit Account and payment methods, you can click here.