Get your act together Mango Airline

My aunt and cousin are flying from Johannesburg to Cape Town. The tickets were bought in October. They were set to board their flight at 14:50 and arrived an hour early to check into their flight. They were then informed that their flight would be delayed until 17:00, then 8:30 and now 9:30. This is ridiculous. Spending about 6-8 hours at an airport.