Billing Account

I upgrade from a Blackberry to a Samsung S5 on 8 March. I was told by the service consultant that my current contract will only expire on 31 March. I was told that I can use all facilities of my previous contract until 31 March. To my surprise I received a bill for R4,801.95 of which the data use alone is R4,117.54, taking into consideration that the services consultant explained that this will still fall under my old contract. When I called Vodacom I where told that I was charged out off bound even the consultant was surprised but said that I need to pay up and can make arrangement for a payment option over 2 months. My concern is that I was never ever informed that it is an open data usage account or received any notification that my data usage is over the limited or anything. I raise this complaint as I am not the only one Vodacom is doing this to when you upgrade and I refuse to pay this account due to lack of information and assistance. <br>