That won't necessarily do anything.
You'll get a call from Executive Services (what remains of it, considering that Sprint is now trying to eliminate that department and give it's power to the average CSR) but your luck in getting out ETF free is probably not good.
OP, I've been with Sprint for 15 years myself. We have LTE where we live, although right now it's at 3G speeds and unreliable. Still, calls and messaging work reliably for us. We were never in the same spot as a lot of people have been in the Network Vision rollout.
That said, you may want to take a look at s4gru.com. They are a bunch of anal retentive Sprint fanbois over there, but the information they provide is accurate. They have a rollout update thread where you can check the completion of your market and also threads for individual markets. Armed with that information you can make a better informed decision.
But if you still want to leave there is one way to do it and that's to get Sprint to terminate YOU. To do that you need to force roaming. Roam too much (old plans 300mb, new plans 100mb data) and Sprint will terminate you. You'll be given a date by when you need to port out. When Sprint terminates you, it's ETF free. Unfortunately, you need to do it for at least two months.
The other way is raising hell with Executive Services. Your luck is probably not good with that. But if you want to start with them, email
dan@sprint.com. BTW, if you want the top guy's email -
daniel.hesse@sprint.com
One other option is to take advantage of T-Mobile's pay your ETF program.