Certificate at Roodepoort Campus.

I finished my N6 is management assistant in 2011 at south west Gauteng college and i have been applying for my N-diploma since 2014 with no results or feedback. so far i have app**** 3 times and i still do not have my certificate...i don't know where to turn to now. I'm very disappointed and upset. all the staff members are very unprofessional including all the campus managers i have delt with.