Mine are not working either
My sms was not working either, unknown to me for well over a week. (I am not a heavy user, I use them in spurts.)
So, I call AT&T, they informed me that I do not have a messaging plan. I say BS, cause I have had one since I created the account almost 2 years ago. Come to find out when I called in to get my voicemail fixed because it was not working the lady turned off my messaging plan because it was on an OLD plan that they no longer had. I knew I was on an old plan, but was told it would work until I canceled it. Well, I DID NOT ask for it to be turned off AT&T did it without asking so they would not lose money, so the guy gave me another plan at a discounted rate while they research how to get the old one reactivated. Said he filed a claim, but we will see what happens. I am not holding my breath. I am VERY pissed about this! The only good thing is this is from the business team, so maybe they are better than the general consumer team. I sure hope so. I will not pay more for the same service I HAD, otherwise that is a breech of the contract I signed and I am out!
I have usually had good luck with AT&T, but this is very annoying.
I am sure they have done this to others.