Where is the money

My uncle who was working for this company Xinergistix service 111 kruispad Brackefell he started on the 05/03/2013 as driver my uncle name is Sandile Elvis Stali born on the 15/03/1964 he died on 2019/07/06 his family hav not received any cent after they claim uptill today they sent all the documents needed he got kids needs to go to university why they not paying the claim