Bad service

I booked my flight at the beginning of October and took my flight today to jhb, once I arrived I decided to check in for my flight back to durban at 4 because I don't have any luggage. I was told that my flight was suspended. The lady at check in was helpful and sent me to guest service. Once there I waited for 20minutes before being seen to and waited another 15 minutes for a guy to tell me there's nothing he can do and I should come later and they will try to get me on a flight back to Durban. While waiting my transport was there to fetch me as I didn't know my flight would be suspended I asked the other staff to call the guy I was dealing with because I needed to leave and they were very rude. I also received an sms yesterday confirming my flights. This is the first and last time I will be flying with mango airliners as their attitude is disgusting.