Vodacom increases contract fees

I purchased a Flexi 100 contract from Vodacom in November 2013. On the 27th March 2015 I received an sms advising me as follows.<br> <br> From 1 May 2015 your uChoose Flexi 100 subscription will increase from R99.00 to R110.00 per month. Your new price plan name is uChoose Flexi 110<br> <br> If one goes to [URL Removed] it clearly states \Terms and conditions remain unchanged".<br> <br> Now select uChoose where the new fees are shown. If one now clicks on FAQ and go to item 3.<br> <br> 3. Why are you increasing prices on existing contracts and not just new ones? Is it legal?<br> <br> Our terms and conditions do make provision for changes to existing contracts. Please refer to the section headed \""Charges payable by you and your payment obligations\"". <br> <br> If you now click on the terms and conditions link"