Safair double booking disaster

We booked a ticket from George to Johannesburg on Flysafair's 30% off sale. The payment was made and then we were directed to the main website after their website stated a problem had occurred. We redid the booking and the same thing happened. Then we realised that both payments went through and we were double booked. The bookings were later canceled and we received an apology and an admission of their mistake. In the meantime we booked with another airline. Now Safair has reinstated both bookings and we are unable to contact them to ask for cancelation of the double booking and a refund. Safair is our favourite airline but this is not good customer service and we are not the only customers who were double booked. Cone on Safair!