Non-existing service by UNISA

The service at UNISA is non-existant. I have been struggling to get registered for Semester 2 of 2019. I received my final results for my Higher Certificate qualification completed Semester 1 of 2019. Since 31/07/2019 I tried to register online for my Bcom Degree in Financail Management aiming to complete 2 modules in semester 2 of 2019, but I could not register. I kept on getting the message "Outstanding items must be submitted before registration will be allowed." I have attempted to contact UNISA several times since 02/08/2019 via e-mail and phone (Landline numbers as on the website, new Toll Free number, e-mails to several e-mail addresses). Calls to the toll free number are not attended to timeously as I was holding the line for assistance 40 minutes, 43 minutes, 1 hour and 25 minutes and and and. On 16/08/2019 I eventually got an answer on the toll free number. The lady who assisted me at first informed me that I should add modules on MyUnisa, that I have tried but still could not register. I phoned the toll free number again and luckely did not have to hold the line that long. I spoke to a Bongani who informed me that I need to pay R530 for Matriculation Exemption Certificate and then I will be able to register. The Matriculation Exemption Certificate was paid on 26/01/2019 into UNISA's bank account by my Employer and Bongani told me that the R500.00 was not paid, but it was clearly stated on my financial statement that it was paid. Even the references used for the R500 and R530 corresponded. I again paid the R530 just so that UNISA can enable me to register online. After numerous e-mails to UNISA to various e-mail addresses I only got read receipts and automated replies from some of the e-mail addresses but no assistance. I received an e-mail from one of the Lecturers who informed me that she will not be able to assist me but that she will be forwarding my e-mail to some of her colleagues for assistance. I also received a phone call from one of her colleagues who referred me to one of his colleagues to whom I had to send all my previous correspondence to UNISA. But to date I have received no assistance on any of my enquiries to UNISA. Therefore I am missing 1 semester's studies, which is unacceptable. How many other students (part-time or full time) has been renderred this disservice by such a big and well known institution. I had to cancel my studies for Semester 2 of 2019 as the registration period has closed and UNISA failed to assist me with my enquiries and registration.