Mango airline-prejudice asshole

So we booked to go durban with mango. We got to the airport, the lady at the check in desk told us we are late the flight has boarded already, this after they called for the durban passengers. There was 3 people after us, they were helped and checked in. We begged the woman at the check in desk to just take my mums I. D num as we were waiting for my sister to come with the tickets, they did not want to assist. Instead the woman let us stand there and beg for her to just take my mums I. D, she refused and said there's nothing she can do. We explained to them that my mum is a dyalisus patient, she needs to be in durban the next day so she can go for dyalisus , they did not want to help us. So we lost over R3000 with this airline and their **** 'protocols'. We were told we would need to pay a panelty of R3000 which is more than what we paid for in the first place. I wouldn't fly with Mango even if it was the last airline. U don't know if they were prejudice cause we are Muslim or that's how it seemed cause they helped the African woman that came after us.