Cancelled Line but still getting billed

Hi I have been to the branch since March this year to cancel my landline and keep getting told it will be done and month after month get billed, When i did the last payment after calling cancellation and been at the branch both the cancellation and the branch told me that the line is cancelled. So all in all i am under the impression that the line is cancelled, handed the sim card to the branch done the payment and left as i was told this is the final amount to be paid. I did and ITC report to only see that i owe Telkom R622.00 Where does this come from as when i called billing the line has not been cancelled,<br> Guys please can someone get their job done. When the line was active i got sms from telkom telling me the amount due, since the last payment done i never got any sms and that was confirmation to me that the consultant did their work. I was clearly mistaken.