Contract Cancellation

I had an account with Vodacom however it is proving to be quit impossible for me to cancel this account and move it to a prepaid account. This issue is going on for the past three months. I am currently unemployed and asked for this account to be closed as i can't afford the services any longer. I complained about this last month and i was told that they would look into the issue, it a month later and still i have not received any feedback. The reference number *** for this call. Once again i have been sent a notification that my account will be debited at the end of October. What part of cancelling the account and that i can't afford to pay for this account going forward is not being understood. We are currently in a employment crisis and it only makes sense for one to make the necessary arrangements with ones creditors. Is a shame that one has to write an official complaint so that one can be assisted. Vodacom's service is shocking as it doesn't listen or attend to is customers needs.