Upgrade, now charging two subscriptions

<p>I upgraded from a 2gb data top up contract to a flexi 110 contract in October online. My online status showed I am due for an upgrade. While trying to complete my upgrade online, a consultant immediately called me saying she can do this telephonically instead. All went through fine and I was told my amount due will be R249. However now I see my end October bill I'm being charged for the new subscription of the Flexi 110 and my 2gb data subscription. I was never informed that this would happen and I've been with vodacom for so long and have never had this problem. I find this shocking that I was not made aware of this and am not paying for 2 subscriptions when Vodacom indicated I'm due for an upgrade. If they knew this would happen, then why allow me to upgrade? So we can be double billed for 2 subscriptions? Vodacom u're sucking right now. </p>