Mango airlines unreliable

Way beyond unprofessional. Flight JE 148. Cape Town to Johannesburg. Firstly the gate is change at boarding time. 10:05. From A8 to C5. We all down to the ground floor to C5. We get there we told no its stil A8. We rush up the stairs case to A8, then immediately we told no go back C5, we storm down like a herd of buffaloes to C5. Then we wait after about 30min we told the flight is at 11:20. Then we told no it's 1hour 30min late. The flight that was supposed to jave left at 10:35. Ontop off all this noone tells us anything. We literally have to walk up to the ramp personnel get info and spread it amongst us. He is behind the gate counter watching us like we lost and not knowing what we doing. How pathetic Mango Airlines.