Line cancellation taken 4 months so far ....

I have been trying to cancel my landline for the past 4 months now! Sent the cancellation form with ID once a month for the last 4 months and still I get no response!! I have tried the online chat and phoned in for assistance and no one seems to be able to help. The favourite answer is 'you just have to wait for someone to call you' ...... Meanwhile, months go by and still have to pay for the service. I am absolutely disgusted in the way this is handled and will NEVER opt for a Telkom service again!