Help Brett with radiation treatment

My name is Jared. I’m raising money on behalf of my cousin Brett Hackney. Brett lives in South Africa. He has been battling a brain tumor for a number of years. He has been in and out of hospital, had surgery. He is now having more radiation treatment to try shrink the tumor down, as it is causing paralysis in his left arm. Brett has medical insurance but has a shortfall, he is able to cover some of the treatment out of pocket but can not afford to pay for all the radiation treatment needed. He is still short 650 dollars. I’m hoping this go fund me can make up the difference.