An Administrator will be appointed in your case where the decedent died intestate that means without a will. If your mother fails to claim appointment, the court may appoint anyone who claim priority for appointment. You can also seek help from self help centers in filling required paper work.
In normal proceedings, opposite party move for a contempt order in case of non compliance. But in case of small claims case, it may land you in regular court. What I think is you need to have enough proof on your hand describing your compliance. So, try to save all proofs that involved in your case.
You can also meet Pro Bono Immigration Attorney for free of cost if you are eligible or else regular attorney. You can also contact the appropriate dept for further information on the issue. Good luck.
The cancellation depends upon the terms of the contract you signed. But, if you are not getting what you paid for, I would recommend writing a letter to the responsible person or else go for a lawsuit like small claims.