I am having the same problem and am writing to the TX Attorney General, Greg Abbott, about them.
Phone Number: (512) 463-2100
Address: Capitol Station, P.O.Box 12548, Austin, TX 78711-2548
You may also want to contact your local Attorney General for your State and file a complaint with the Federal Trade Commission. I am doing that too.
I wrote to them 3 times because I do not owe the money they say I do. Good luck to you... perhaps if AG Abbott gets enough complaints, this will stop for all of us.