Poor Service

I cancelled my membership in May 2019, the General manager Kgothatso Chiloane, confirmed via email that the membership is cancelled. My account was debited twice in March, i logged a complaint he said he will come back to me to let me know of the procedure up until now he has not responded to me. This month they debited my account again, i send an email on the 21st with no reply from him, I called him on both the landline and cell phone without any luck. i want to be refunded the two payments they debited and cancel the contract if not cancelled.