Changed phone number appears correctly in my profile but Xfinity cannot recognize it

I have changed my phone number many weeks ago and it shows up correctly on your webpage. But today I received an email saying "Please provide a new phone number The phone number ending in 7766 previously associated with your account ending in 3606 has been removed from your account settings. This could happen if it was added to a different Xfinity ID, reassigned to another individual, or disconnected. Update your phone number using the sign in option below. Please note that you will need to sign in using your Xfinity ID and password as your prior phone number will no longer work as a username substitute. Adding a verified number ensures that we can contact you with any important communication regarding your services and makes proving your identity easier down the road." 

Your chat bot is incredibly simple. I am still waiting for it to transfer me to an agent, more than an hour after it told me it would do that.