Disgusting!!!!!

I had booked 2 adults in a flight from George to JHB, 6 weeks ago. All bookings confirmed etc. Only to arrive at George Airport to find out that the flights had been CANCELLED!!! NO notification was sent either via small, phone call or email. It cost me over R6500 to het them urgently on the last flight out that day. Now refund seems not likely from Mango. They want to give me an open ticket for a year...NO THANK YOU!!!!!!!