Debit my Account for Data I did not purchase

I have had an account with Vodacom for over 11 years now. Earlier this year I contacted them as I was paying for a service that I wasn't receiving. The attended so well to my query that I had to log another one as the 1st one lapsed according to them.<br> <br> I cancelled my 1GB data bundle and upgraded to a 2GB bundle FROM THE 1ST OF MARCH. I have now received 2GB of data and my account was charged for that data. THAT WAS NOT MY INSTRUCTIONS!!! The lady that assisted me in this promised that the data will only be given in March and I will only be paying as from March.<br> <br> Now my question is: WHAT THE HELL ARE YOU DOING VODACOM?????? I want you to take back your 2 GB and refund my account. I WILL NOT PAY FOR SOMETHING I DID NOT ASK FOR NOW.<br> <br> You are n breach of your contract with me and I will not think twice about cancelling this contract and I will not pay you a single sent further.