Unable to terminate contract

On the 15 January 2015 I called <br> cell C's call centre to confirm when my contract would expire. I was told 2 March 2015 and that I should email a cancellation letter 21 days before the contract expires. I emailed this letter on the 5 February 2015. On the 12 February I received a call from a rude woman at customer care telling me that I am liable for March's payment. Today being the day my contract should lapse, I once again phone the call centre to confirm all this, I was then told cell c requires 30 days notice for cancellation and my contract would now expire 7 March 2015.<br> <br> All Call centre agents are giving me a different story, leaving me in total confusion and disgust. Is this what Cell C is about.<br> <br> I require urgent clarification on the matter.