Doctors practicing using us as guinea ***s and charging our medical aids Broken

My son Jarod was rushed to hospital to the emergency Dept at Mulbarton suffering with severe abdominal pain...the local Dr on Duty then referred us to Dr Ede a Gastroenterologist at Mulbarton. He then ran a CT scan, MRI and a scope up and down. Then he comes out and concludes that my son had IBS and says the appendix is fine....what a load of *******....my son had his appendix out when he was 15. It's been now more than 2 weeks without any real answers. We then changed doctors to Dr Rolland who still could not pin point the exact problem. We then called a family friend doctors (a urologist) Dr Friedman who went through everything and found an infection with possible Colonitis but he confirmed that this is not his speciality...we have now been referred to another Doctor ( Dr Khan) so hopefully we will have answers soon!!!!!! I intend pursuing legal action against Netcare for neglegience of their so called specialist Doctors. Are there qualifications even real. Disgruntled parent looking for answers that Doctors should know