water dispensern keep throwing water out when feellike?

water dispenser keep throwing water out often without any warning also many times without pressing water button
I have defrosted the freezer and taken all the ice out and left fridge/freezer unplugged for several hours and turned the water off then later switched on water and plug on and it was okay for few hours and sooner touched the water button to get a glass of water out and it would not stop throwing water out

any suggestion or help would be appreciated