Worst service !!

I booked a P.E. to Cpt flight on the 18th of September 2015 for travel on the 29 December 2015. I received an e-mail form Mango Airlines on 1 Dec 2015 informing me that my booking has been changed over to SA Express as they no longer fly P.E./ Cape town route !!??There was NO communication prior to this change and Mango simply took it upon themselves to book as they saw fit. They have no regard for passengers travel arrangements made months ago and simply could not be bothered to accommodate passengers due to their sudden change of schedule. Despite sending Thonifho emails to confirm new booking there is just no response from them. AVOID USING MANGO AIRLINES AT ALL COSTS !!! WORST SERVICE I HAVE EVER RECEIVED !!!!