Employee not donig his work properly

<br> My father passed on September 2014 and left my brother, who is still in school, in my care. March 2015 I went to claim an independence benefit on behalf of him to take care of his school fees etc. At the Department of Labour I was helped by an agent who has not done his work properly and therefore it caused the claim to be unsuccessful. I was told on the 25th of March 2015, exactly 6 months from the date my father passed on, the 25th of September 2014. An agent helped me but because of me not having all of the documents at that time, was told to go back home and get all of the documents needed( the documents the agent refered to was a Birth Certicate of my brother, which I could get hold of because he was at school in another town. When he finally had the chance to come down we went to go make him a Birth certificate and we got it. on the 14th of April 2015 I went to the Department Of Labour once again all to find out that I'm late and that my claim will be refused because it allready exceeded the 6 months period. The Agent who than helped me told me that the agent who prevoiusly helped me should have captured the application form and then shouldve told me to bring the other later