Cell C converts contracts *******ly

Cell C. You unilaterally converted my Month-Month contract to a 24 Month contract. This must be resolved or release me from the contract. A consultant of yours at Kenilworth Centre advised me that you can convert contracts "whenever" you determine. I need feedback as promised. My number is ***. No service provider has the right to alter the terms of your advertised contracts. You still have Month-Month contracts advertised. Is this a ****?