You can swallow me but I can't swallow you, where's the justice?

I booked flight JE245 for 3 passengers on 9 January 2018, to attend my dad's funeral in Durban. The flight was supposed to depart from OR Tambo at 08:40am and to arrive in Durban on 09:50am. I left home at 6am that morning for fear of missing my flight as I know Mango does not comprise for late passengers. The flight was **********ly late, when we enquired about the delay with the Mango gate attendants we were told that the aircraft is ready and waiting but Mango unfortunately does not have any available crew or pilots as they are still on holiday for the festive season. We were appalled, why then did Mango sell tickets if they do not have staff on schedule for duty? After a 5 hour wait for Mango to get their act together at OR Tambo, our 08:40am Mango flight eventually departed after 11am, we arrived at Durban's King Shaka at around 12 noon. When I hastily got to the church where my dad's funeral service was held I was shattered to find out that I had missed my dad's entire funeral due to Mango's incompetence. I am utterly dismayed at the level of Mango's service unfortunately their apology does not suffice.