Let's be real, though - you didn't speak to loyalty. You spoke to retention and that is their job to try to keep you as a customer. Honestly, I have to say - suggesting others call to cancel their lines in order to get a free phone is totally missing the fact that retention looked up your account and your history to see how much they can provide back to you. Others likely wouldn't see the same results. You got a free phone, and they have you as a customer for another 2 years. It wasn't really 'free'. Free would be you getting the phone without having to stay with them for any contract length. lol
I've received various offers when I tried to cancel things before - like my cable, wireless service, etc. - so I can totally see this being fine. But suggesting folks call their provider to threaten to cancel when they have no intention of cancelling in order to get perks - I guess I'm also on the fence on that one. It reminds me of when people here "canceled" their Note20 order via Samsung in order to try to get the $100 off. It's not really ethical.. but then again, what is?
And yes, companies nickle and dime us up the wazoo so I can understand the sentiment to want to "stick it to them" - but then again, I also choose to be their customer as well.