GEMS ADMITTED TO WRONG CALCULATION

Good day

I have written a review on the 9 September 2024 and was contacted by GEMS and told my problem will get the necessary attention. We are now at 25 September 2024 and still no progress. This is a calculation problem GEMS admitted doing on the 28 April 2023 and now suddenly 17 months later I am in arrears with my medical account. Who did the wrong calculation not me, I have paid every month and now how is responsible for the R3301 in arrears.