Arrogant staff, no customer etiquette

So disgusted in their service at the David Stuurman International Airport (Port Elizabeth). I booked a flight for myself, husband and my wife month old baby to Johanmesburg on the 30th of September for the 12th of October until the 19th. Our flight was for 20:10 the evening and we checked in online. Bag drop closes 40 mins before. We get there at 19.15 and with stinking attitudes they tell us that bag drop is closed. We can call someone ro fetch our bags or we can pay extra to change our flight to the next day. Adele who apparently is the manager was so disrespectful and rude, she ignored us at first and when the boarding gates were emptied 9f all the passengers and we were left there trying to talk to someone. They were speaking In Xhosa and making sny remarks, laughing. It was already stressful traveling with a new born. Utterly disappointed. We had to pay am additional R1745 to change our flights. They are the only airline on pe traveling to jhb so they run the market and they don't hide the arrogance.