Paying too much levy is very frustrating on Chronic Medication and on Classic Comprehensive Option.

My child is epileptic and is on chronic and I still fail to understand that how can i pay levy of R2228.25 on medication which the doctor had prescribed for him and also wrote a letter to the medical aid about the medication she recommend for him, the medication put him on chronic but still paying too much levy on medication, and still pay alot on the medical aid option we took (Classic Comphrensive). What is the use of having medical aid and still can this frustration.