Price Increase on Contract

I Signed a 24 month contract this locks me in for 24 months with a certain price. Vodacom has now decided that they want to increase. Vodacom needs to send me the original contract I signed that shows I agreed to that term and conditions that they can increase subscriptions durning a contract period. If they can not I will be cancelling all my contract with Vodacom on the base that all contract are null and void.<br> <br> This is the second issue I have had with vodacom and it is not even the middle of the year. I think it is time to move on and off a contract.<br> <br> <br> <br>