Sim Upgrade

I am so disappointed with vodacom call center consultant Jeremiah whom I spoke too when I called to do my vodacom SIM card upgrade. I requested him to upgrade my SIM to the same package I was using and he agreed that he will do as I request. Week later after he helped me on the 31st of March I received a confirmation with a different package I requested, I called vodacom I managed to speak to him again to rectify the mistake he made therefore he assured me he will reverse the package and I wont b charged anything extra. To my surprise after the 1st when my vodacom app update it shows the different amount which I don't understand I called vodacom again and he told me the is nothing he can do, after I asked him to send me confirmation that he will reverse the bill to b the correct amount, he hang up on me . I am so much disappointed in him. I tried to speak to other consultants but they refuse to help they just direct me back to him. Vodacom failed me so much 😞