Lack of accountability

Im up to my throat with discovery. My son was hospitalised at Netcare waterfall, this is supposed to be a network hospital. For the past 3 months I have been making follow ups with discovery regarding the shortfall for medication used at icu as this is supposed to be full cover. Still no feedback. At some point they even requested documentation from ME, a parent to obtain from the hospital which they are contracted to as if im supposed to be a party in-between the contracted hospital and the medical aid. I have done more work and follow up that the people sitting in that building. I have sent proof of usage of medicine, letter of recommendation and proof of everything my son went through and they do not think its trauma enough that I have to undergo through the same process weekly without them responding to me. To me the amount paying is too much to be going through this. Monthly I receive demands from the hospital for the fees that were supposed to be within cover. If this is not resolved, my family would rather move our medical and life covers because the disrespect for the common man is beyond boundaries.