Discovery health complaint

On the 14th of January my dad requested his repeat cancer meds as we were leaving for holiday in the Northern Cape. He was however advised that he cannot request a script within 24 days of the previous one. He was assured that medxpress was 100% capable of delivering the required meds anywhere in SA. We have for the last two days trying to source his cancer tablets, WITHOUT ANY SUCCESS and the tablets are running out. We also spoke to Southern RX. Neither medxpress or the latter are able to source and provide these meds. Needless to say he is beyond frustrated and furious as we are Very far from any pharmacy. the cancer tablet is called Abiratorone. How is it possible that they could play around with things like this. So now who is responsible to get these meds to us? Or does he go without and risk the cancer getting worse. As it is it has been a struggle to stabilize his count.