I hope I am correct in thinking you need the help of an adviser at the University of South Africa in applying for a grant (a bursary?) from the South African National Scheme Student Financial Aid Scheme?
First, Fixya.com is intended to be a website for asking and answering questions about how to repair _things_.
Second, your question landed in the Fixya category for Computers & Internet and not Higher Education or Financial Aid.
After making those points, you will need to go the the UNISA web site This is the link to the home page:
On the home page you should see the MyUNISA link, the portal for UNISA students. There is also a Contact Us link near the upper right of the home page, which you can choose to obtain a telephone number to speak with a real person.
Also, this is the link to the NSFAS home page:
Scroll down that page and look in the lower right corner of the page to find telephone numbers you can call.