The Vodacom contract TRAP

The Vodacom trap that no one is aware of, is making money for this company like you won't believe. I signed a contract in 2017 for R 159 pm x 24 but I didn't know about the trap. This amount is now R217 per month, shut your trap and pay up. Try and explain to stupid old me how I'm bound by a contract but Vodacom can change the contract when and how they please. It does not make sense to me that false advertising and omission of facts are allowed and is in fact part of their daily modus operandi. No Vodacom contract is then worth the paper it's printed on. I've had all kinds of explanations as to how the increase occurred which just boils down to, a ******* company *****ing it's customers (legally ?) wherever they can. Stay away from Vodacom or they: Will ***** your money and there is absolutely nothing you can do about it.