Yes, that is a big NO-NO in Texas! You can countersue them right now for not less then $100 per violation, which right now is one. Is this listing on your credit reports? I would definitely get a lawyer if you can manage that!
If you can't get a layer (I highly suggest you try) then you can get some help here. Most of us are not lawyers, but we have experience with helping others, but remember, we are not lawyers.
Have you just gotten the summons? Have you filed an answer yet?