Frustrated Student

The service that we as students are receiving from UNISA, as a center for learning is discouraging. Where do we turn to now? I registered for the Programme in Total Quality Management last year (2021). First trouble i had was with the study material and course models, they where never delivered to the selected address. Submitted all the assignments during the course of the year. Come Exam times, all 3 exams where postponed due to a technical error on their side. We where promised feedback on this till today NOTHING at all. To my surprise, i get an email from UNISA informing me that i was absent from my exams. Sent all the Head Lecturers emails in regard to my issue and i am still waiting for some kind of response. I am totally frustrated and helpless in this regard