cancelle my contract to pr-paid

<br> Once again I tried to phone Vodacom but Vodacom notifying me my account had been suspended - I email them with the attached proof of payment and still awaiting for someone to phone me back regarding this matter my debit order had been cancelled with my bank (A response of they will contact you within the next 24 hours turned into days. If I phone back Vodacom again always off system<br> I was due for an upgrade 1 Dec 2015 on Phone number *** I would like do cancelled my contract and go over as I pre-paid customer the request was submitted 19 December 2015 02:41 PM again today is the 12/01/2016 and up to date ne feedback but a new bill. I can't afford to be on a contract anymore. <br> <br> I'm getting frustrated. Vodacom you can easily send out a message \Life is hectic