I just started working with a new organization and any emails they send me are getting blocked. If this was the first this has happened I would understand but this is the 3rd instance. I have verified that they have my correct email and have been on the phone with them when they say they are sending it but it never gets delivered. I have checked Spam and that mailbox is empty. Thoughts?!?
Check your Spam settings. Make sure that "Enable spam filtering" and "Save a copy of emails marked as spam" are both selected (see https://www.xfinity.com/support/articles/spam-filters-and-email-blocking-new-experience).
If the settings are correct and an employee doesn't reply to your message here, Comcast Security Assurance should be able to help. You can reach them at 1-888-565-4329 (from https://internetsecurity.xfinity.com/help/report-abuse/). Note that this is NOT one of the general customer service numbers.
The first-line reps there are sometimes not very helpful, so you may need to be persistent and keep at them until you get a satisfactory answer.