Paying for a contract which is cancelled

I recently took up a vodacom contract with a new number ********** 336 when I was called I was told the I’ll be getting 20 gigs data and my application will be validated after a day or so a lady contacted me to notify me that I don’t qualify then they will gve me an airtime deal then I said am not interested anymore after a while I received a call from the call center agent who initially called and said il get data. only to find out it’s once off data I received the sim card on the 7th and I decided to to cancel the contract before ten days when I went to a vodacom store in loius Trichardt to pay the the bill of my existing contract of my ********** 030 I was told am owing 437 then I called the call Centre and I was told I should pay r137 of the number I cancelled so I asked why should I be paying 137 because I was told that I would be paying 89 and I was told I should pay more because I cancelled. my problem it’s I was given wrong information to take up a contract which benefits the call centre agent and vodacom now am being expected to pay 137 it’s not fair I’ll never take up a contract over the phone because I was mislead and now am being expected to pay or my ********** 030 will be suspended