Unisa owes me 9000 rand and won't reply

If there was a zero option I would give it. Processed a cancellation and full refund on the 14th of January in line with the 10 day cooling off... The university is sitting on 9k of my money. I have had no feedback from the 22nd of Jan when the last mail I got was "we have escalated". I have struggled since day one. I have since then called 3 times and been on hold for over 20 minutes at a time... I have sent many mails and get auto replies... The only outbound coms from this university is on twitter (I don't have twitter). So I'm finding out on Google about all the nonsense regarding semesters. The call center and staff who check mails are ghosts... But we see stuff on social media about new staff being hired. I even contacted the so called head on LinkedIn because his twitter says "DM me if you are unhappy with service" ... No reply. I'm convinced my money has been ******... Unisa... Angasi. What can you say for this disgusting service? Please... I want my money back so I can go to another school.