Received very bad service from the Campus Manager

Had a very bad experience, I am a student at this campus in Roodepoort so I have been in contact with the Campus manager (Mmabatho Mashiane), I contacted her last month and explain to her that my employer is willing to pay the outstanding balance of R7355 and the full amount of R19875 for this semester so if possible they must send the invoice including all these amounts then I was told that it was not possible then I asked her if is there any way we can resolve this then she said it isn't, so yesterday I sent her an email to enquire if its possible to make arrangement to pay the outstanding balance since they cannot include it in the invoice since is from the previous semester then she told me to pay 50% of the outstanding balance and the remaining balance within 3 months then I asked her is it possible to pay R1225.83 for 6 months then she said no. I must pay the outstanding balance first then once done I can register again next year. The sad part is that right now I have to drop out because she is not willing to make payment arrangement with me after my employer and I have paid the total amount of R34105 for the previous semesters and on top of that she doesn't even consider the fact that my employer is willing to pay the full amount for this semester and I am also willing to make arrangement to pay the outstanding balance so that I can continue with my studies. I am so hurt and I don't think I will continue to study with them, I chose them because I thought it was a reputable institution but after this traumatic experience, I think once I pay the outstanding balance and get my results I will study with the other institution because clearly Boston City Campus do not care about their students. It's like they are always waiting for students to struggle to pay their fees so that they can drop out and lose all the monies they have paid