Wow - I would have thought for sure that you had the grey version. Do you have any kind of skins (BSE, Zagg, etc.) on your phone? Doesn't sound like it but I had to ask. Anyway, you'll have to just push down on the button even thought it doesn't seem like it's doing anything and very gently try to wiggle the case off. I went through the exact same thing with several grey cases before I gave up and went back to black. You'll get it off eventually - just be careful not to force it or you may break the case.