Still pretty new here myself, but since you had no replies thought i would try to respond, someone will correct me if i am wrong. BBB Disputes are not typically used for credit reporting agenices. They are normally used when creditors or collection agencies are reporting inaccurate data and you have attempted to correct directly with them, but have failed. You may want to post most details on the information you are disputing to get more and better responses.
I've had success against EX by opening a BBB dispute against them. They deleted the entry right away.
I am just wondering if those that filed against TU, which TU office did they file against?
I've never filed a BBB dispute agains a CRA, only a CA. Let us know how it goes.