No message button, how can I email Xfinity support

I do not have a message button icon in the top right corner of my account. Is there a more reliable way I can contact Xfinity support asynchronously, like with an email? It looks like there might be 2 accounts associated with my email (ending in 02 and one ending in 72). I cannot view the 02 account. I'm trying to tell if there is an outstanding charge on it I need to pay.

I tried to work through your website, but it is incredibly difficult to use and not user friendly.