Vodacom Worst service ever with ******* debit

i called on the cancellations line 081 135 to cancel a data contract which i have not used for years but was still paying. i was convinced by the agent to renew with a new handset and SIm at a lower cost R179/mth as opposed to 299/mth. i agreed on condition that i receive the handset and sim together as i have not got the old sim. the handset arrives but NO Sim. several calls and hrs on teh phone but still no sim 3 weeks later. so i eventually called cancellations, and Cancelled by yet to be activated contract. then the SIm Arrives and i did not accept delivery. i returned the hand set still sealed as the contract wads cancelled. but guess wat Vodacom still went ahead and debited my account and have been for the past 3 months. its is ridiculous that Vodacom can't link active contracts with billing correctly. Maybe if ICASA imposes a heavy fine on Vodacom then maybe they will relook at their billing system for accuracy.