Unable to purchase data bundles online

<p>Been trying to purchase data bundles online, as I've done many times before.</p> <p> </p> <p>Getting the following error:</p> <p>Unfortunately you are not the main account holder and can only buy bundles using a bank card or credit card. Please contact the main account holder to give you permissions or contact Vodacom customer care if you are in fact the main account holder.</p> <p> </p> <p>Please correct this!!!!!!</p>