Assured by Mobiles.co.uk that network coverage from Vodafone best for my new address post code. Consequently, when purchasing my new I-phone6 from Mobiles.co.uk i agreed to discontinue with O2 and sign up with Vodafone. Mobiles.co.uk also informed me that a "sure signal" device was available from Vodafone in the event signal was poor in doors. Vodafone are refusing to supply this device unless I pay for it which contrary to what was verbally agreed by Vodafone at the time I checked coverage with them. I am now considering taking legal advice on the basis that I have been miss sold an item under the consumer sale of goods act