The bottom line
1. Forget about referring your problem to the SA Caa, just read all the comments about the organization within African Aviation forum, in a nutshell, you are probably, really just wasting your time.
2. Forget about referring your problem to the SA Police as they are too busy dealing with Serious Crime within SA! to worry about a civil matter.
and thirdly, having already personally experienced the real true and genuine joys of South Africa, however, subsequently being "traumatised" about "it's bad side " and in particular, be very careful about utilising flying school packages, specifically referring to, Cape Flying Services.
read this forum and be very carefully prior to committing to any kind of aviation training within South Africa, because as always a "few rogue elements will always spoil it for the many reputable" and avoid " UK based agents" promising you the world.
Good luck from a fellow UK resident.
Sandy