Dishonest Represention

I received a SMS from Vodacom advising that I qualified for an upgrade on my cell phone. I called the call center and proceed with the package I wanted. I asked the consultant twice what the new installment will be and twice she confirmed the amount. When I received my statement today, I am billed an additional R300.00. I called to find out why I am billed for two handsets and was told that the first contract has not come to an end as yet and therefore I am liable for the additional handset. They offered to collect the new handset , only problem is that I don't have the old handset as I gave it to someone in need. The consultant told me they assume I knew that the contract has not ended as yet. Yet it was never explained and the additional R300 was never mentioned when I asked what the bill will be in future. I am highly disappointed in the ********* way business was conducted. I have been a client of Vodacom ever since cell phones were launched in SA. I will think twice before renewing a contract with them in the future.