MyHoliday are *****s, don't use them

Biggest mistake ever, buying airline ticket through myHoliday. They not only ***********, they are also *******. I bought a return ticket to Johannesburg, only to be stranded in the airport en route back to Cape Town. Apparently, myHoliday couldn't secure me a return flight so they decided to refund my money instead (incompetence). I had to pay R2200 to secure a one way flight to Cape Town. I asked a myHoliday agent, and was told a refund of R1863 will be paid to me as that was the original price of the ticket. At this time, thanks to myHoliday incompetence, i lost R400. I accepted this as i had no choice. Fast forward 2 weeks later, a refund of R1263 was paid to me. MyHoliday, where is the remaining R600? There's no airline in this world that the price will spike up by R1000 in 24 hours. I know price change but to go from R1263 to R2200 is impossible. I emailed MyHoliday for a breakdown of the flight ticket i bought so i can see for myself what each cost. I still haven't heard from them. They are *******. Never use them if you want peace of mind.