I got a text saying that I could upgrade my 5s to the new 6 for 0$ with tab plus, and 270$ off retail price, What does that mean? Can I just go into Koodo and have them give me a 6 for free? I can't figure it out as the 6 online is like 170$ or something like that making the 270$ off obsolete? I dont get it, please explain!!!!