Re: Failure to Provide Translated Copy of Contract
Your mother failed to practice due diligence. She needs to take contracts to a person (like maybe a lawyer) who can explain them to her if she does not understand what is in the contract. She should simply figure that everything she signs is a contract in some way because, generally, it is.
Attempting to rescind the contract will likely cost you more than the $500 termination fee if you have to use the services of a lawyer.
Beyond that, if the service was part of the sale, rescinding the contract would likely result in the ATM being returned as well. It is unlikely you can separate the two.
I am not an attorney and any advice is not to be construed as legal advice. You might even want to ignore my advice. Actually, there are plenty of real attorneys that you might want to ignore as well.