How to disable window auto update in windows 8.1 OS

I have to know is there a way to have control over the update feature in the latest windows 8.1 operating system. Main reason to look for this is that the my data bill is more this time. Iy is around 10 times more than what I used to get other month. My friend had connected his laptop to my internet when he had visited me last week and I strongly believe it has downloaded all the updates! Next time, first I would disable it and then allow internet access. Thanks for sharing. I have Assembled desktop with windows XP running and had never given this shock.
