Qatar cashes in on Covid

I am very disappointed in this airline. I bought my ticket months in advance as that's what I could afford. Flight was cancelled so got a voucher, yay you gave me 10 or whatever percent to say sorry. Now flights prob will resume from SA, and u want me to pay in an extra 4k. ****************. Now I'll never get home for Christmas. Call centre was very rude to me as well. She also said the world has a problem and its the Christmas period, yes I know, well guess what, now ppl can't go home for Christmas cause we can't afford your prices!!!!! I have never flown with Qatar and was so excited to, but now I will not!!!!! Just open the flights, rebook ur tickets, qatar will cancel again and make u pay more next time South Africans!!!! Us teachers are never going home to see our families!!!!