Vodacom

I am really angry and disappointed with Vodacom SA I was a very loyal customer for years but what they have done to me is the last number, I had a data and airtime contract with them and was due for upgrade I got a call from a guy offering me a better deal I expected not knowing the guy was lying about the amount I was going to pay, debit order went through it was too much and not the amount that we agreed on I immediately called them and canceled the contract, the guy I spoke to begged me not to cancel the contract but I insisted, later this year I went to Vodacom to take a new cell phone contract and I was told I'm owing them I was shocked how do I owe Vodacom were as I canceled the contract I then called customer care they filled a dispute for me and said they will come back to me I called again to check the feed back the didn't have the answer so I called in again now I was told now I'm handed over to the lawyers??? How am I handed over to the lawyers not notified yet not even given feedback of my dispute I laid I'm told I owe R1600 guys can you plz assist me on what process I need to follow to fix this cz I cannot pay for something I don't know of plz help... Number in question ***