Pay for your fault

I was 5 min late for my flight and I had to change my ticket and it cost me money. Well, I understand that it's my fault and considering safety reasons they can't check me. It cost me 506 to change the ticket. Today I arrive in time to check in from Durban to Cape Town, I was told only when I check in that the flight is delayed and on my arrival at the airport, the pilot tells us the weight was too heavy and some of the luggage was left behind and coming with the next flight that's 25min behind us. That's costing us another money to pay for the parking tickets they don't come cheap and shifting appointments you loss certain percentage of your deposit. I mean I can't be late and pay and pay again when the service provider is late or come keep up the service.