Affinity Emails being Blocked

Yes, I have checked my email settings several times.  Once on my own, a second time using the Xfinity Virtual assistant (who concluded my problem was resolved and disconnected me), a third time with a live technician on the phone (who agreed my email settings were just fine and indicated that I should call Customer Security Assurance, as did Latoque above) and a fourth time with a technician at Customer Security Assurance who set the Spam Filtering option to "override security filters" so that now all spam comes directly to my inbox.  The Customer Security Assurance Tech believed the issue was resolved and indicated that I should just wait to see if the email from my credit union now comes through.  Since the emails from my credit union have not been coming through to my inbox OR my spam folder, I'm not sure how allowing all spam emails into my inbox will solve my problem.  I still think that Comcast might be throwing the emails away before they even get to my spam or inbox folder because the security checks believe it's a "suspicious" email (the From address is very long on these particular emails) but don't know there is anything I more I can do.  I have also contacted my Credit Union who says it's a problem on Comcast's side and that I'm not the only one experiencing the issue.  If you or anyone has any other insights I'd appreciate hearing them.  Thanks!

@lcoz 

Do you have an account with some other email provider like Outlook.com, or Gmail?  Something else?  For now, give the credit union the other email address and see if the emails come through OK.  Once you have done that, if you want to try an experiment-----------set that other account to forward emails from the credit union to the Comcast address using a filter.  Make sure you set the other account to keep a copy. See if the messages that are forwarded get to the Comcast account OK.

@lcoz  Are these from "affinityfcu[.]org"? (trying to avoid the forum removing the domain).  Have the messages started coming in?  I see some, but they look like they were support tickets, though I suspect these aren't the messages you're looking for.