Vodacom unexeptable conduct

I have been a client for many years with Vodacom. a couple of months I noticed that There is an additional number to my name , I logged various ***** investigations , but every time I call to follow up it never the Consultant could not find it on the system. then out of frustration I did a sim swap to at least get the Sim so that I can use the airtime that I have been paying for all the time . when doing the sim swap. I cancelled the contract and last week phoned to confirm the cancelation just to find out it was done . Then my wife went into the shop to try and cancel it , to hear from the person at the shop all this is done deliberately , so that your contract will not be cancelled.