Proxy Server problem

My Comcast Proxy Server has been out of commission since December 28 2020. 1) Emails will not delete, Trash won't delete, Spam wont' delete. Spam and Trash won't even show ... I get a little gray circle going around  instead. Can't send email messages . Continually get SERVER UNREACHABLE message popping up along with  a 408 ERROR message. It has interrupted my internet connection as well as my speed of which is about 1/4 if even that of what it should be. The problem is completely on Comcast's end. They have acknowledged it is a technical issue on Comcast's end. I have spoken to roughly 8 agents . A visit from a technician as well to check everything on this end. Then I have to hit O over and over again on the phone to get a human on the phone to talk to.  What does it take to get Comcast to fix this problem?  Or do I have to cancel the account and look elsewhere??????