Poor Service and causing more problems then solution

Worst service ever. I have logged my a notice to cancel my contract. But instead people doing there job listening to the customers request stop trying to re sell more contracts then we wont have problems. Since my I logged my request my contract was never cancelled. I was billed for another month in April which is wrong after I cancelled my account. I have used this number since April as a contract and out of the blue today they want to re instate my number as a contract. Now that I want to cancelled it again after it was initially cancelled I now need to pay for another month which did not want and will only be cancelled in Jan. I still haven't received my contract notification for cancellation which might just end up not being cancelled. I have been with Vodacom since i started using a phoned and this is because the worst provider due to poor service and people not doing there job. I will never use another contract from Vodacom after the mess I have with them. I had this is with 2 of my accounts.