Bill more than double after migration!!!

I received a call from the call centre at the end of Dec 2014. The agent spoke to me about migrating my Talk350 to the Red Premium Package, all the time telling me how much cheaper it is and how much money i would save. I was shocked to see at the end of Jan 2015, after logging into the app, that my bill was more than double of what it normally was! Their excuse? I ran out of data and the out of bundle rates app****!! With my previous package i received notifications to let me know when a data bundle was low or depleted, which apparently is not a service offered with the red PREMIUM package and then the agent i phoned today had the audacity to tell me that the sms service \is not reliable"and i should check my balances myself. Well it was a lot more reliable before Vodacom PHONED ME to migrate my contract. I refuse to pay the out of bundle rates for the data used. I was never informed of the fact that i would no longer be receiving sms notifications. This is clearly another money making **** brought to you by Vodacom and goes against everything the Consumer Protection Act stands for. Vodacom put me in this predicament - If they didnt migrate the package"