Vodacom account that was opened and I did not agree to it !!!!Needs to be canceled !!!

I have a problem with Vodacom my current contract finish October and a lady phoned me last month and want to reinstate again i said she can phone me back this month i will decide only to find out she re instate it ,I phoned Vodacom now since last month to cancel this contract cause MTN did give me a better offer they not helping at all they all agree rude that I spoke so far with.I told them even the device rooter is not working so since beginning November it cant be used the gentlemen is telling me that's not their problem i need to sort it out ....how can i pay for something that's not working that's why i want to cancel it I DONT WANT IT anymore cause VVODACOM is not helpful at all they just want to deduct your money and their have no respect for their customers ....Can someone please assist me to just cancel this with Vodacom cause they don't want to assist ......They don't know who to treat their customers ,....You phone 082135 / *** / ***/9 but the one department don't know what the other needs to do .....I don't want anything to do with Vodacom because of their services !!!!!!