Utterly pathetic service from Kulula - Total ****!

I tried to book a flight for Durban to Bangkok using the website on the 29/04/2016 and the 03/05/2016 Depart: 24/06/2016 at 18:40pm Arrive: 25/06/2016 at 18:30pm (around that time) And Depart: 11/07/2016 at 2:25am Arrive : 11:07/2016 at 19:30pm When I tried to finalize my booking I received an error, and the amount was reversed on my credit card. I cleared my booking 3 times and started again. I contacted your call center and all I got was the system did not refresh and therefore that price is no longer available! It is not the customers problem that your system is slow, i tried to book 3 times after refreshing at the price of R9971 not at R11656 which your call center agent tried to offer me! I then tried again today and found a similar flight to the above times for R10314.00 and the exact same error popped up, what a surprise!!! I am very unhappy with the service from your website and your call center agents, and I would greatly appreciate if you could rectify this error and honor the price of R9971.00 and those specific flight details. I think the system identifies how many people are trying to purchase the flight and then kicks out the customers and pushes up the flight (e.g. R11559.00) - Total **** - obviously!