I can not turn off VoiceOver on iPhone 4S

How can I turn off VoiceOver and get back to normal ?!

As I follow the instructions how to turn off 'VoiceOver' in Setting on my iPhone, however VoiceOver icon get back on quickly after double click... (haven't upgrade iOS 8.1.1 yet)

• Tried to do double click 'Voiceover' icon in Setting, but doesn't off and switch on back quickly..

• Done press 'Home' button 3 times quickly, but Top page shows up later..

• Done turn off the phone, the VoiceOver shows up with passcode screen..

What else I can do for turning off the annoying voice?

Turning Voiceover Off

1. Double-tap the Settings icon on your homepage.
2. Use three fingers to scroll down to the General menu, and double-click on it.
3. Use three fingers to scroll down to the Accessibility menu, and double-click on it.
4. Double-tap on the VoiceOver menu item.
5. Turn VoiceOver off

Alternatively, in iTunes you select summary and click Universal Access, then choose either Zoom or Neither rather than VoiceOver.