STILL AWAITING REFUND AFTER 5MONTHS LATER

I registered my brother with college sa ,they asked us to pay an amount of R2350 and 1500 every month thereof ,My brother waited for the study material in vain,he decided to cancel within a month as there is a guarantee of full refund if you cancel within a month.I initially spoke to Aashiqah Kruger who promised that the refund was processed , 3months later she decided to refer me to Lameez who promised that the refund will be sorted out ,i made numerous calls but nothing has been done.I don't know what to do as i feel like a stupid to let my brother register with this inefficient and unprofessional institution.I made a call and was advised all the managers are not in and the refunds department is still busy .Hello Peter you are my only hope.