Kulula Disappoints

I have, for the past few years, used Kulula.com up to 15 times per month as I live in Plettenberg bay and have my business in Johannesburg. My experience with the airline has generally been a good one , other than being late on the odd occasion. Early in March, I attempted to book return flights to/from George as per usual. Upon confirming date/time and price (including 15% discovery discount) - +-R1150 one way, the App instructed me to wait and stayed on this screen for +-15 Mins. When I went back in after re-booting the App, the same ticket had rocketed to R2,990 !! I have called the Contact centre on a number of occasions (Only to be told - price is subject to availability , no apologies, no + client interaction or feedback) and have had 2 calls back asking me what phone/operating system I am using but no resolution has been forthcoming in the past 2 weeks !! I have since (after using Kulula exclusively for the past few years) started booking with Mango and Flysafair at much cheaper rates. If I do not get a satisfactory answer from Kulula, they can wave my ( family, extended family included) business goodbye permanently !