Discovery refuses to cover chronic meds

Good day as a chronic patient who has diabetes and is on the diabetes care discovery medical aid which is not cheap and neither am I on a low package is refusing to pay for my diabetes injection which cost 1600 per month excluding the big amount of medical aid that is being paid.I call in and the consultant can answer my question because they can see only what the rejection response is.I know discovery medical aid is ripping customers off. It this is to far if they cannot assist a patient with chronic medical care what is the use of medical aid ? I would like to find other discovery patients with the same problem I think it's about time we stand up an get what we paid for.