Line cancelled - but still being charged

I completed a service cancellation and emailed it to Telkom (as per their guidance). I cancelled my landline and ADSL line on the same form. After an initial call from Telkom to confirm the cancellation on the 13th October - we heard nothing further. I started with my new fibre service provider 4 weeks later. On the 1st November I called the Telkom call centre to confirm cancellation. They knew nothing! I forwarded them the cancellation request to ********** who promised to escalate. No feedback. I called again this week and someone else promised to help - but now we are still receiving accounts for November! when we cancelled in September.