Misrepresentation!

On the 7th of August 2013 Vodacom brought me under the impression that I was signing a contract with them for 2 years to pay R 199 per month excluding the device. Today I received an sms from Vodacom stating that my Smart S subscription will increase from R 199 to R 209 per month from the 1st of May 2015. I then opened the vodacom website to better understand the situation. I read the FAQ's where they state:<br> <br> \Q: Why are you increasing prices on existing contracts and not just new ones? Is it legal?<br> A: Our terms and conditions do make provision for changes to existing contracts."<br> <br> To include a clause like that into a contract is misrepresentation and a clause like that is extremely dangerous as they would then even be allowed to change the price to R1000 per month! <br> <br> Please assist me and obviously everyone else using Vodacom to resolve this issue.<br> <br> Kind Regards """