Q: I turned on voice feature in "Accessability" and cannot scroll to change it back

is that the voice over?

use three fingers to scroll

iPhone: Configuring accessibility features (including VoiceOver and Zoom)

If VoiceOver is on and you want to turn it off from the device instead of from iTunes, remember that a double-tap acts like a single tap and you need to use three fingers to scroll when VoiceOver is on:

1. Press Home.
2. Tap Settings. Then double-tap Settings.
3. Tap General. Then double-tap General.
4. Use three fingers on the screen to scroll to Accessibility.
5. Tap Accessibility. Then double-tap Accessibility.
6. Tap VoiceOver. Then double-tap VoiceOver.
7. Tap "On" next to VoiceOver. Then double-tap "On" to turn it off.

To turn off VoiceOver do the following:

1. Press Home.
2. Tap Settings. Then double-tap Settings.
3. Tap General. Then double-tap General.
4. Use three fingers on the screen to scroll to Accessibility.
5. Tap Accessibility. Then double-tap Accessibility.
6. Tap VoiceOver. Then double-tap VoiceOver.
7. Tap "On" next to VoiceOver. Then double-tap "On" to turn it off.

it is indeed, even more painful if you enable zoom....