Arm Panels Set

I turned off the water valve, but water is still running?
Replace my shower arm and when I checked the valve water, was already in the setting "Off." However, all the water in my house is running … When I turned on, water began to run through this tube, but does not affect anything in the house? How can I turn my water then? A panel in the closet behind the shower pipe is behind it, is that how?
your best bet is the main shutoff valve on the sidewalk or where your water meter is ……. This isolate all supply water to his house and let you work on your faucet properly -….
AEROPOSTAL DC9 MAIQUETIA 1 MARES (RWY 09)