> I am looking for assistance in dealing with AT&T over an MDNS (Managed
>> Data Network Services) account that our company closed in
>> approximately September 2002.
> [ rest of all too typical story snipped ]
> Stop wasting your time trying to reach them.
> Send off two notes: One to your State's Public Service Commission, and
> one to your State's Attorney General.
> Make it short and sweet.
And I'd have my attorney do it with copies to AT&T billing AND legal departments.