This was not helpful. My phone number is already in the account and it still says it needs to verify to add a payment method. Something is wrong on the back end of my account that needs attention. 

@user_japrku Thanks for the feedback, we appreciate it and know this is important. Entering a code to add the payment method is required. After clicking the link to add a payment method, you’ll need to confirm your identity by entering a six-digit code. It says so on this guide: https://www.xfinity.com/support/articles/my-account-app-manage-stored-payments. You can proceed with the Xfinity app if you prefer. That will skip having you enter a code, the instructions for that are also in the guide. 

It does not allow me to enter a code. When I click “add new payment method” it says

You can't add a new payment method yet

We need to verify your contact information to keep your account secure. Make sure to add your phone number and email address if you haven't already.

The problem is that I have already updated my phone number and email address. Something is wrong on the back end of the account and I need to get in contact with someone who can access my account possibly someone on the coding side. 

Thanks for those details, user_japrku. Here is a link with the details to update your account information, https://www.xfinity.com/support/articles/update-account-preferences. Are you using the website or the app? Have you tried logging out of the website and then logging back in? What device are you using to access the website or app?

I have tried both the website and app. I have tried logging out and back in as well as clearing browser history. I have accessed the site on iPhone, MacBook, and PC. My phone number and email are already in the system so I can’t update something that’s already there.