Vodacom being dishonest

<p>Vodacom informed me that I could upgrade my contracts. I did the upgrad online and phoned in to enquire when the payment will change. I chose a cheaper package because I could no longer afford to pay R1100 and they told me the new payment of R600 wil start from september. Now they are deducting R1600 and said because I upgraded online I must pay the old contract for another mont. This is nothing less than thievery. I will not pay double. I want vodacom to refund me the R1000.</p>