Contract Cancelled Prematurely

I phoned Vodacom's Retention Call Centre on Thursday 12 March 2015, I requested that my contract be cancelled/converted to prepaid at the end of the month. The call centre agent then tried to retain me, however was unsuccessful. I confirmed that I wanted the contract to be converted to prepaid and asked that an SMS be sent to confirm. The call centre agent stated that I could \consider it done". Minutes later I received an SMS confirming that I had been converted to prepaid. I have thus lost about 50 free minutes and over 800MB of data bundle (since that wasn't carried over). I contact the call centre to complain and was told that a reinstatement of the contract would take up-to 14 days. They then said that I as an alternative to reinstating the contract they would credit me with R100 airtime and Thursday"