Serious Complaint

I have been struggling over a year with my Dad's medical that they must rectify a payment of R1700 that was wrongly paid from his savings account instead out of my mother's oncology benefit. There was 2 of these faults. The one was rectified but after that I get no response. I send numerous emails. To get through to them on the phone via the call centre is just a nightmare. There is no simple way to just speak to a consultant.