Worst service ever

In November 2019- i cancelled my whole Telkom line- and got a reference number ***3. Now in Jan 2020, they suddenly have no such a request- after i specifically requested to cancel all. They have requested that i cancel the adsl with my ISP, which i did, of which the proof was send, and now they say that they only have it on record that i cancelled the adsl and not voice. And the keep on billing me- no one gets back to me- and no one seems to know what the other one is doing! Nor do they seem to have any idea of what is happening and i as the consumer just have to bear the burden. Telkom is in deep **** and the ‘loyal’ who pay will be forced( in this case) to continue to pay