BETRAYAL OF LOYAL CUSTOMER

I have been a loyal customer of Vodacom for over 20 years. Earlier this year I took out a new cellphone contract with them. I think it was about R369 per month. Few months later I get a call from a Vodacom agent (serpent of Satan that she is), informing me that I can get more Data and Voice Minutes and actually pay less by switching. I told her this sounds impossible but she assured me and reassured me that is 100% legit. I then told her to proceed as I would be getting more for less, only to discover that my monthly bill is now R495!!! How the hell can this serpent of Satan LIE to me like that without even missing a beat. I would like VODACOM to please rectify the matter and get me back on my old contract and everything that came with it. If I wanted to pay R495 a month, I would have taken a contract to that value.