No attention given for the Online students

Once again IIE Rosebank College. I am an Online 2nd year student. Must we always fight to get something done for us? I have been struggling to get registered for the past weeks, my school account has a balance that covers 2x modules that i have registered on the portal but the portal keeps saying i must pay an extra R1900 for what i do not know. I have logged tickets on RC assist but all they do is send me my statement or an incorrect one for another student then close the ticket and most recently i was told to contact my college. Try calling the IIE Rosebank College, everybody knows that they do not answer, they don't know what you talking about and will try transfer you to someone who is never available. I have been transfered to the Online department more than 5times and there is always no one to take my call. Now i don't know what to do, who to call because soon the classes will be starting. It is such an easy process to correct this, but no one is available to assist...which is sad.