Misleading:

If they said they can do it and did not do it, how is that not misleading? Legally speaking, if I was their lawyer, I would advice them to get rid of any evidence that they promised that they could remove hair off her hand, guaranteed or your money back kind of thing, assuming they made those promises. Now, if they didn't guarantee it, then I'd feel confident going to court to argue something similar to what you said. As a company, I would probably have a disclaimer and have my customers sign a contract that says that they understand that it may not work and no refunds or whatever that I want in that contract. If I was her lawyer, I would hope that I could plead a case in front of jurors. I would try to trap the company on something and maybe get the jurors to feel sorry for the lady, just so I could win. But it is possible that both sides are kind of wrong. So, I would probably prefer a case like this dismissed immediately.