Double payment demand and double disconnection of services even with proof of payment

On the 2nd May 2020 I paid my DStv account seeing the due date was the 5th May 2020 on the 5th May 2020 DStv debited again I reversed the amount seeing that I had paid. On Monday the 12th my service was disconnected I called them with proof of payment from my bank the service was connected and I had thought it was the end of it.

Today the the 16th May 2020 my service was again disconnected I called the customer care centre again, when I asked the consultant what the problem she said it was other department fault I was disconnected. I am disappointed in DStv as I paid for a service and the customer care staffs incompetence to resolve my issue