Am I seeing this deal right?...

[davesafc]

On the 1st april I got a text saying I was due an upgrade from my current 2G Iphone and I could have the Iphone 3G on the £35 tariff but would have to pay £99 for the Iphone. I never took this up but the other day I was on the o2 website and came across this page

www.o2.co.uk/iphone/paymonthly

now if you look under the tab "o2 customers" and look at the paragraph under the system requirements it states that you can have the 3G for free on the £35, £45 and £75 tariffs on a minimun term contract then goes on to say the minimum term is 18 month.

I rang o2 to be told the upgrade text I recieved was sent out in error and I cant get an upgrade until the 14th may (1 month before my contract ends) and when I asked about the free iphone on the £35 tariff they said I had to take out a 24 month contract not an 18 month one! the lady on the other end of the phone also loaded this page up when I gave her the link but denied that it had £35 in that paragraph even though I was staring at the same page!

am I reading this page wrong are is this false advertising??? and what would you do about it?