Worst Service

I missed the flight this morning and I asked for the next flight, I paid and I received both boarding passes for am & pm. In the afternoon when I was supposed to board only to find that my ticket is suspended without any notification and the manager said SA Express wont be responsible for that. I had to pay for a shuttle at night to East London. Only to find that after I left the guy who was serving me in the morning cancelled all my tickets and to rebook I had to pay R1100, no body called to tell my office that where as SA Express had our contact details. I was stranded in PE with SA Express want nothing to do with that. If I was aware of the charge as the manager claimed I knew I was supposed to pay R1100, why did I get a a boarding pass for the afternoon. Why did they cancel my flights without talking to me? I arrived in the airport at 14h00 for a 16:15 flight and I already checked in in the morning. I had a boarding pass with me. I still dont get it can somebody explain to me.