Cancellation NOT completed

Hi, my report today is to complain that Telkom Mobile's Cancellation Department is pathetic, i was told to fill out a cancellation form and send it 21days before the contract should be cancelled, my form was sent through on the 6/10/2015 only received an email back the 23/10/2015 yet contract expiration date was to be the 1/11/2015 up until today my contract has not been cancelled nor have i received a call from their department regarding my cancellation. the minute a customer owes them something they quick to call but when they owe you something then they dont even bother calling...i have followed up on my ref four times so far and still no feedback.i have now also sent cancellation for my landline wonder how long this will now take to cancel.i received an invoice of my mobile contract also stating i owe R905 when my initial installment is only R419 and im not behind with payments...i will NEVER recommend this service to anyone.