IRON INJECTIONS NOT COVERED

It is now 2 years already that my Iron levels and store's are lower than normal. It could not be establish why I have such low iron levels and am daily exhausted. Initially I asked Discovery if I could go for a Iron Drip which was denied because of the cost factor. I was advised to first use Iron supplements for a period of time (I cant remember for how long, it could be 6 months or 9 months). Iron supplements, though vitally important, is not covered. I am on Classic Comprehensive plan (2nd highest plan). Iron levels are vital for oxygen delivery to the entire body and if not rectified can have serious consequences, but these supplements are not covered by the Scheme. Yet VitB12 & VitB-complex injections, also supplements, ARE covered. Now 2 years later my Iron levels and store's is STILL not normal. Dr advised that we should try a weekly Iron injection for a month and then once monthly and test again after 6 months. Last week in December 2017 I went for the 1st injection (it was covered with a co-payment of +-R50) and then went for the 2nd injection on 6 January 2018. The 2nd injection however is not covered because the 1st injection is to closely followed by the 2nd injection. 2 Expensive procedures, Colon Scope and Gastro Scope to find out if there is loss of blood resulting in Iron loss was covered. These procedures did not deliver answers for the problem. This somehow does not make sense to me. How should I get my iron levels back to normal with the support of my already expensive medical aid. Shame on you Discovery.