Anukampa service after death of employee in national insurance. Advice

hello sir my father death in 2009 he employee in national insurance company as development office after him death we apply anukama service against him death but company reply that no provision in compny after 2002 they close anukampa service they give a 100000 fund against it but now they give service after 2015 they start only who die after 2015 they give their spouse service as anukampa service now why they not give service for 2002-2015 who die person so what we do where we apply for servics what remedy available for us..