Debt-in and Telkom

So Debt-in charges R20 per call to me and on top of that calls me about 6 to 8 times a day. Even if you do not answer, they STILL charge the R20 and if you answer, they hang up, STILL charging the R20. This company should be charged with harassment as this is totally the case, even when I look at all the other reviews... same story! I am so fed up with them, they don't care to hear my side of the story about why my Telkom account was not paid. Telkom failed to cancel my contract, after numerous calls, emails and re sending of cancellation letter, it took them 6 months to cancel the contract and then said I owe them the outstanding amount, after THEY did not adhere to their OWN processes and procedures where it should take one month to cancel. How pathetic... Now I have a bad payment record, but I refuse to pay all these additional charges from Debt-in... it is utterly insane and only shows desperation from their side!