After 20 days of overcharge, still no resolution

I account has been double debited by R514 twice on 25th and 26th November 2022 respectively, after I made the payment for my flights to and from Windhoek on 22nd November 2022. I have emailed Gwen from Travelstart Customer Serivice numerous times, but with no success. Currently while typing this message I have been holding on for an operator to take my call fir nearly 25 minutes. I am sorely disappointed with Travelstart's service that use to be so on point.