Telkom incorrect subcription charge fibre & mobile; terrible service; failure to correct

Apart from always taking away current fibre offers and harrassing you with marketing, Telkom cannot sign me up correctly on 2 contracts now. Billing for item not taken up or used. Then when logging fault, it takes numerous times before Telkom calls successfully (if the call fails or line drops they do not call again), then they only make correction on 1 months invoice! The next month Telkom bills me incorrectly again. I've tried 4 times on mobile contract and 1 time now on fibre contract to correct this. Terrible service and ********* business = Telkom