TELKOM,Hands off my account

I have been calling Telkom to cancel my contract which has since ended almost a year ago.The automated machine tells you cancel online.Online they require a reference number and yet it is your 1st time and you are then unable to go further without it or it will tell you there is a technical error,please try later.I sent an email and got this reference case number is ***7froma no reply mail.Still waiting.I went to Telkom the Groove on the 4th Jan to give a 30 day notice. The lady told me since the contract has long ended I don't need to put a 30day notice and can cancel immediately. But she advised that since you have already paid,let us make it prepaid so you buy as and when you need it.Then come the 25th Jan after I took a rain contract. Telkom goes and debits my account.I then reversed the order since this is not what we agreed on.Now to my surprise my credit rating moved from 92 to 0.Thanks to Telkom . I suppose we are meant to just lie down and let these companies give us empty promises,do as they please with our accounts and not say a word .All they have to do is report you to ITC and get your rating to look ridiculous. I don't even owe credit card and yet my score is 0 now.Thanks to Telkom and for trying to do things by the book.Stop fighting dirty My contract with you has ended long ago,stay out of my account.