Processing an order I did not place or authorise

Yesterday I received a call from a telemarketer selling a 2GB deal and I did not accept this deal. They tried to call me several times today but I did not answer their calls. However, I suddenly receive an SMS from Vodacom stating \a Vetting application for a new line has been registered against my Account\". I called Customer Care immediately and informed them that I did not authorize such. The agent assured me no orders had been placed. However at night I received another SMS stating \"your customer order number ***9 is being processed and should be dispatched\". I called Customer Care again but the agent was unable to assist as it was after hours and I now had to contact the after sales department. I find Vodacom to be totally irresponsible and negligent - how can you process an order without verifying with the Customer, from a clearly ********* telemarketing company like REWND? No one from Vodacom verified this order and now I am trying to stop ********** activity on my account. Please stop this sale immediately and reverse any transactions. "