Incorrect billing of contract

we changed to wifi contract last year June because the area we had moved to didn't have adls lines.

Round about October Last year we get a bill stating we are R3100 behind in payments. so i refused to pay as i had proof that we had been paying our account every month, also we weren't able to get hold of telkoms so called customer care to try and resolve the issue.

Finally we get through to them and by this time our account is already over R5000. Their explanation to use is the we were still paying for our ADSL and they didn't receive payment for the Wifi line.

Also we have a debit order on our account so why was telkom deducting money for the wrong contract.

so Telkom please explain to me why we were paying for a ADSL line we when we had moved to a WIFI line. And now you want me to pay for your mistake.

Correct me if i am wrong but are-you not trying to steel from me. If so i think i will go make a case again you for theft.