Vodacom Data

A couple of months ago I was cold called by a Vodacom representative who convinced me to change my databundle. 30 gig at a price of R354. For the last couple of weeks I have been harassed by vodacom on the premises that they call to save me money. Argument being that the package that was sold to me no longer exist, even though it was a 24month agreement, and if I do not change my package to a new, one that only cost R29 more, I will pay R175 more. This sounds like misrepresentation, breach, ******ion and who knows what else to me! Don't trust vodacom