Online Booking purchase

I have booked the car rental via kulula online upon , which the money was deducted from my credit card. when i landed in Capetown on the 22nd of march 2015, i was told they don't accept African bank credit cards, yet it was the one i used to book the car online. There was no apology whatsoever with the massive inconvenience they caused me. They claim that they didn't take the money, yet received the sms when i bought the ticket online. To date i have not received the sms up them crediting my account. My biggest worry is that why didn't they have a disclaimer on the website that they do not take the likes of my credit card. They caused me a fortune for i was late for the function was going for, let alone having to rent a car right on the spot. I have never been so ill-treated ever in my life yet i have paid for the service. Kulula gave me a consolation of R500 on my next travel for the inconvenience cause, i have not even receive a word from Europecar.... why and why are the customers being subjected to this type of treatment. why is it OK for this big companies not to loose money yet they find it Ok for them to make customers loose money, disgusting indeed.