Don't believe anything they have offered you. I signed up. They talked me into giving them 2 phones ( a new android and an iphone 7 plus). They were supposed to send me a check to pay off my previous carrier (Verizon). I've never received anything. I've called and called. Talked to so many people. I know it is a different promotion but just warning you. T-mobile has not done anything promised in my case.
It's a bummer to hear something like this, but we do appreciate you telling us how you feel. I think it's tough because there's no way to really tell that a different deal is coming since these communications for this is kept closer to the chest until the deal is going live. I understand this doesn't change much, but I hear where you're coming from.