still no feedback on cancellation,just new invoice

on the 3 september 2015 i logged a complaint about struggling to cancel telkom line.i received feedback that my complaint would be send through to cancellations.no feedback rather get a new invoice.i cannot phone to wait for 20 minutes just to be told system is offline and supervisor is on lunch.but if you phone for sales then call is answered immediatly.the ref i got for the first complaint that did not go anywhere was sm142077.that is as far as your poor service goes.