Change in contract details

I guess Vodacom has become to big for its own shoes.<br> <br> This morning I received notification that they are unilaterally changing the terms of the contract i have with them.<br> <br> Legally a contract is binding by both parties and requires consent from both parties to make an amendment.<br> <br> I tried calling your call centre to get more details but gave up after waiting an hour. From what I have read online, you ******** call centre agents are just giving out a standard response that Vodacom has the right to change the contract.<br> <br> I will be laying a complaint with the consumber council etc,It isnt about the quantum of the change but the principle.<br> <br>