Terrible email 'service'

This evening my Thunderbird client stopped being able to send or receive mail.  At first it was just sending - I got an error message that the imap server was down.  Now nothing.  I tried sending from my phone and I was able to get an email from Cox to hotmail but the hotmail to Cox email didn't show up.  I remember about two years ago when Cox made a server 'update' and it took 9 months for them to straighten it out so I'm concerned.  At that time they had the problem with an update to the West servers and it took many calls to the Corporate hotline before I was move to another mail server.