Telkom Failed account cancellation and over billing for no service

I cancelled my service with this ****ty company, a while ago but I'm still getting debit orders coming off without permission. I gave them notice, my deposit was taken and an additional 200 and something. They have continued to debit my account and I keep reversing it because the service was cancelled with the notification period adhered to. Should I report these people to ICASA or Ombudsman? They provided a lackluster service withh constant issues with connectivity and slow speeds with multiple issues logged and multiple speed tests submitted at various times of day of around 2MBPS yet I was paying for a 10MB speed. They then moved me to LTE from ADSL which was even worse than the copper which had noise issues and high latencies. Why are they so ***********? Why am I still being billed for a **** service that was provided? I now have RAIN LTE at half the price with no issues and the same speed, what a ****ing ripoff. Stop ****ing causing me more issues and billing me for absolutely **** all as your service was **** in the first place. Account number ***. Fix your dumb ****ing call centre and *********** staff you ****ing idiots.