Bad service

I bought 3 ticket which I thought it was Durban _Pretoria which I thought qas 07h30 pm only to find that it was 07h30 pm. When I realise that around 15h00, I panicked.. I started by calling Voda pay then they referred me to quichbus, then Aldo coach. They told me that I missed the bus and there is nothing they can do, not even charge me penalty fee, I had to book again the 3 tickets again. I was worried why not call to confirm. Be it aaas it may, when I was in Durban station I realized that they were other people who were called that the bus was about to leave which I was not afforded that opportunity. If others can be offered those opportunities why not me? On Friday I had an issue with them about over loading bus with people sitting at a very close range to us which made us unconfortable and I made several calls and even send the whatApp messages which they read and never responded to up until now. I need help with this issues and I suspect that this is the service they are giving to us. Can someone explain and at least take me through the process.