Expired contract

My contract came to an end on 9 August 2017. On 25 May 2017 I emailed them the fully completed and signed cancellation letter. I was told a retentions consultant would call me to finalise the cancellation. It has been three months since the cancellation form was submitted and no one has called from their retentions department. The contract ended and i'm still being billed. I have even received a new invoice for September 2017.

I went to their store in The Grove Shopping centre and the call centre agent that answered the call asked that we send her proof of the cancellation letter and she would escalate the case. She sent me an email in which she confirmed someone will call me in one business day. It is almost the end of the day on 11 September and still no call received from Telkom.

I'm disgusted by the poor service!!!!