******* Upgraded phone contract but they conveniently added the contract to my account

I have upgraded my phone contract online, received the phone etc with a new sim?? Phoned the call centre regarding this and also the invoice they sent, even before opening the package. I was told it was a new contract so I immediately cancelled the contract, this was on Saturday, 6 January, the lady said the contract was cancelled and that they would send RAM to collect the phone, it is 15th and nothing has been done, the contract has also not been cancelled on my profile! I WILL NOT PAY FOR THIS PHONE CONTRACT I HAVE CANCELLED!!! You people are *********** *******!! (reference number VODACOMDIREC- ********** ********** 48)