Saturday’s performances of the Four Frames of Freedom concert celebrating South Africa’s 30 years of democracy at Artscape in Cape Town were abruptly cancelled.The show was cancelled on Saturday after the organisers’ vehicle was hijacked on Friday night.“Due to an unforeseen and deeply concerning incident involving the hijacking of our company, Jazzart Dance Theatre’s vehicle last night, the 2pm and 7pm performances of Four Frames of Freedom scheduled for (Saturday) at Artscape have been cancelled,” the organisers said in a notice.The company said none of its dancers were…