Vodacom systems down and disabled SIM?

<p>After an unsuccessful attempt to upgrade my phone and contract at the Sandton Drive iStore, (the excuse was that Vodacom's systems were down and they could not finish my upgrade. )</p> <p> </p> <p>30 minutes later and Im unable to make any phone calls as my sim is now disabled.</p> <p> </p> <p>This is unacceptable as i need to be available on my cell at all times. </p> <p> </p> <p>Vodacom also does not provide email or online chat services after hours. how do i resolve an issue wothout an active Sim?</p> <p> </p>