Allocate my grandson's funds back

On the 14th of February 2015, I visited Medi-score Newton Park Pharmacy to get some acute meds and my blood pressure medication as well. When I checked the claims I picked up that the claim for acute medicine was paid from my benefits but that of the blood pressure medicines was paid from my grandson's benefits. I sent my back to the pharmacy and he requested the pharmacist to re-write the prescription and ensure that the claim is submitted under the correct dependant, the pharmacist did as such, reprocessed the prescriptions and re-submitted them, this time around, the medication was paid from both my benefits and my grandson's benefits, as if we both take the very same medicines, which isn't right. BP medication processed under my grandson's benefit is not right, my grandson does not have blood pressure, I already went to the pharmacy and they sorted this out on their side, now why is it that the medication is irreversible from your side and why is it difficult to get my grandson's benefits re-allocated back to him? On the 4th of March I sent an email to enquiries(at)gems.gov.za regarding the above, and I received no reply, just an automated response, please sort this mess out.