Surplus funds

We keep getting agents tracing down family members to apply for my gran dads surplus funds, they ask for documents and everything just to say he beneficiaries don't qualify because he died, this has happened countless times. How is this fair to his kids that are still alive? He worked in the mines his whole life for minimum wage, died poor and his kids are still living in poverty till this day, they contacting his kids and give them hope that they will receive some compensation and then say no because he died. If the funds that were rightfully his cannot be given to his beneficiaries that need it, what is the fund doing with those monies?