No e-mail service

My email account is not working properly. I normally use Mozilla Thunderbird for email service. Feb.2nd after logging in to Thunderbird I get this when clicking get messages:

The STAT command did not succeed. Error getting message number and sizes. 
Mail server pop.cox.net responded: Mailbox is in inconsistent state, please relogin.

I then log into Cox' webmail and get a message telling me that my request took to long and 
times out or says my inbox is empty but shows numerous messages in it .
After several calls and today, February 11, I still can not access my mail accounts properly.  Support has
 been in a "pass the buck mode" with finally they give me a ticket number while saying they will call me 
when service is back up.  So far, I have received two "Ticket" numbers.  9 days of trying to fix a problem that
 started after some person in programming  suggested upgrading an email application that was working properly
is unprofessional.  Revert back until the bugs are fixed.