Is there management at Vodacom??

I am now convinced there is no management at Vodacom. I have been a customer for about 28 years and never had to deal with so many people pushing you from post to post. In September last year, I upgraded my cell contract and wanted to cancel an old second contract not being used. The lady in the call centre convinced me to keep said contract and I will receive a tablet free. The tablet arrived beginning of October with no sim card. 5 calls later I eventually get sent a card. said card does not work (I am told that it is my problem and I must go to a store to sort out). I cancelled this contract and returned the tablet and sim card. I have probably spend 3 or more hours talking to various Vodacom staff since this date, waiting for someone with management abilities to come back to me since I AM STILL BEING CHARGED BY VODACOM for the tablet and contract. Is this theft from my account? I cannot stop the debit order because ALL MY VODACOM DEVICES will be turned off...