How hard is it to convert to prepaid?

I cancelled the contract with effect from the 01/04/2016. The number in question needed to be converted to prepaid. I cannot tell you what a bad experience this has been. Numerous visits into the branch. Endless time spent on the phone with the call centre and still no closer to a solution. Today is the 07/04/2016. I actually just dont know what to do anymore. Is there no one at Vodacom that can actually help me??????