Thanks it is more than odd.  Not too many companies i know will  offer a price through their own mobile app and then not stand behind it - many would call that fraud - confirm one price and then charge another.    I even took it into a store and the rep said that I was correct about the pricing being the same $15 per line and they should stand behind it but then what else can she say.  You are also right that Verizon really doesn't care and will just ignore it and expect it to just go away.