Telkom Cancelled, still being charged

I cancelled my Telkom account in August and got reference numbers for it. They told me I had to settle an amount (the next month bill) which I did. Now i September I've received another statement saying that I owe even more than my normal monthly charge. Do you increase the bill to avoid the cancellation??<br> <br> Telkom, please sort this out.<br> <br> Line number: ***<br> Ref numbers are:<br> ADSL (line rental) : 127 164 127 A<br> Internet: 127 164 578 A<br>