Vodacom telemaketers uninformed

On 22 November 2018 I received a call from a Vodacom agent informing me about my upgrade. I clearly stated to her that I want to upgrade to UChoose Flexi 220 R169pm. She informed me that I cannot change to that plan, as it is only for new contracts. I then accepted another plan as she instructed. On 23 November I had visit the Vodacom shop, and they told me that I can upgrade to the UChoose flexi 220 R169pm. It is NOT for new contracts only. Why is your telemaketers so dishonest Vodacom? Please go and listen to the recorder, as I have asked the lady several times if she is sure that I cannot change. The Vodacom shop said they cannot cancel the upgrate, I need to phone Vodacom self. I then phoned Vodacom , and the lady requested a cancellation for my upgrade. This is done all within 24 hours that surley falls in the cooling period to cancel the upgrade. I received a reference number 1- ********** ********** . It is already 3 days later and still no response. Please cancel the upgrade cost debited to my account as well!