Double charging

I booked a ticket online for the 5:55 flight and the website took my money and told me to call client services. To my joy you can never get through to client services. On arrival at OR Tambo I was told my ticket had been cancelled and the money was hanging, I would need to pay a second time for the same flight. To make matters worse the amount I was being charged had increased too. Will now have to go to my bank and fight my own money back. Never again will I fly kulula. Many happy flights ruined by this.