I just got a very convincing email the thing making me question it is mainly the email adress and that it is asking for billing info. Is <Edited> an official address that would ask for billing info
That's a phishing scam. The email address you listed is not valid.
If you check your email with Comcast's Xfinity Connect webmail, look for the XFINITY Verified Email logo next to any message that claims to be from Comcast/Xfinity (see https://www.xfinity.com/support/articles/comcast-verified-email).
Samples of recent phishing messages can be found at https://internetsecurity.xfinity.com/help/alerts/ under "Top Phishing Scams".
If you are so inclined, follow the "Report Spam and Phishing Emails" link on https://internetsecurity.xfinity.com/help/report-abuse/ and scroll down to the "Report Phishing Emails" section.