It's already been 12 WEEKS no refund!

I was due to go overseas for study purposes. Via CPUT. I was told to pay for my own flights as the university in Romania will then reimburse my flight upon arrival. Due to covid-19 I was unable to leave. Bare in mind I booked my ticket to leave in February and then rescheduled to leave later as my Visa wasn't ready yet. Then on the 11th of March I was supposed to leave but in that day I was emailed to say that the educational activities have been postponed. I had to cancel my plans because I was only supposed to go abroad for 3 months and come home to complete my 2nd semester. Upon paying these fees + travel insurance so far I only received my travel insurance refund (i probably wouldn't have if I didn't send the proof of payment which Santam had sent me) I'm sure if Qatar flights sent me a proof of payment it would've been done a long time. Plus, the exchange department at the Romanian university they have made contact with Qatar flights & this was in April that the refund has already been made. The policy of Flight Center states 12 week waiting period (minimum) now suddenly it's 16 weeks with no physical proof? It's been told to me that they've escalated and escalated but nothing's happening! I have rent that needs to be paid, I am a student I'm unemployed. Why are funds being withheld? Is it so you can pay me back with interest? I am so fed up.