Hi, just taken delivery of my 208 gt line, and when i touch satnav control i get a message saying satnav is absent. When i ordered this, i specifically asked if it came with satnav, as I'm rubbish at directions, and the sales guy said yes. With a 10 inch screen. My screen is 7 inches. I would have paid extra for the satnav had i been given the choice. What can i do now? Thanks.