****** my monthly data

I have a vodacom contract. I get allocated data and airtime on a monthly basis. For the previous months I used to get an SMS confirming my allocation of airtime and data on the first of the month. <br> <br> This month I only received airtime. No data and no SMS confirming the allocation. I called vodacom to log an enquiry. A consultant by name of Sqelo confirmed that there is no allocation made for me this month and that I will get my data withing 24 hrs. A few hours later I received an SMS that I have finished my data. <br> <br> I called 111 again. They now insist I depleted my data in 2 days. For the past 20 months I never depleted my data. Vodacom simply ripped me off. All I want is to cancel their contract.