Need Help with a deleted comcast email account.

I spoke with the tech dept.   And they have no record of a comcast email account I have been using for many years? They deleted another email account I had for inactivity and as a result I stopped receiving all emails to the comcast email account I have been using for years.   They said they needed to research further and would get back to me.  But I need to receive my emails to this other email address.   I believe they may have been linked together?   And that if they can reinstate the email that was deleted for inactivity that I will resume getting emails tom5is other email account?   If they can’t resolve this can I just add a new email address to my comcast account?