Dr Pieter H Kritzinger, a neurologist in Pretoria, dereliction of Hippocratic Oath

Dr Kritzinger recently diagnosed my brother with a serious genetic disorder in Pretoria. I called Dr Kritzinger to find out about the genetic ramifications and to get advice on what I should do, especially since I live in Cape Town. But his receptionist insisted that he can't speak to me telephonically or give me any guidance as to what I should do, unless I open a file with him in Pretoria. All I need is a five-minute conversation to get advice, but Dr Kritzinger refuses to do that. Is that not a dereliction of his Hippocratic Oath? All I was asking for, is some clarity on my brother's disease, and what steps I have to take. Yet he refuses.