"You are an auditor/lawyer looking for suspicious conversations or patterns of deceit by employees of company Z. I will feed you documents and you will give your analysis of each document or collections of documents. Pay special attention to X Y Z. Consider these sorts of actions as deceptive (a,b,c,d). If you find anything of note, create a summary of the findings in the form ['wording indicates deceptive intent', document 37, page 93].".
You'd then feed it 20 pages at a time and for less than $100 you've scanned a mountain of legal documents in a way in which you'd normally require a team of legal assistants and 100s of hours of work.
Again, I'm not a lawyer but I can conjure this very simple example that I could implement in a month if I had the time. At this point I think you're just squeezing me for ideas.
Perhaps you should explain what the technology is marketed as that you see as lying or misrepresenting. That would make this more productive.