New account that I never authorised

In November I upgraded my contract on a Vodacom app. The package was delivered with a new sim card. On the 6Dec after I had enquired I received an Sms confirming to cancel the additional account that the company created without my consent and the device would be collected to effect the cancellation, that has never happened I have been enquiry every week as I now have two existing accounts with them. I later attempted to cancel my old account spoke to Lwando and Mxolisi at cancellations towards the end of Jan. My matter is still not resolved.

I am stuck with two active contracts with Vodacom.