Service cancelled - Lines ******

I reported a problem, with my fiber internet line on the 3rd of July 2018. I then logged a fault on the same day. Telkom did not respond. I phone again a few times and got a hold of Telkom the next week on 9 July. They stated that the lines were ****** and that they were not going to replace the fiber lines. I was told that I needed to cancel. Telkom could however not cancel the line on the telephone and it cannot be done in a store. It can for some or other reason only be done on the Telkom site. This was a predicament since I had no internet. I however managed to cancel the contract on 9 July 2018. Telkom stated that the cancellation would take 30 days. I now received a bill for the last months services, cancellation charges, early termination and late payment charges. I initiated a dispute however Telkom continued to debit the cost from my account. The cost is unjustifiable since I have had no internet line and Telkom cannot provide the service as there is no lines. How come they charged me for early termination and cost for a line I could not make use off. Telkom is the worst company you will ever have the displeasure to deal with. Staff are ***********, and management is non-existing.