Bad customer service

Had a terrible experience with Flysafair at East London Airport. My flight was at 09:10 and there was terrible traffic on the way to the Airport. I made it before gates were closing though but they turned me back for a very small luggage bag, that was apparently too big... I've been flying so many times with the case as hand luggage, but this time it was too big. When I tried to book the next flight, it was R2700 more on top of the R1200 I paid... I didn't have that kind of money so I couldn't go anywhere, even using a bus since there's no refund. My heart was crushed because I had to be home for a family emergency. On my way out of the boarding gates, a few employees actually confirmed the lady is like that with everyone, she's been turning back a lot of people. Customer service was terrible from getting in to going out... What a waste of money!