My iphone 3gs is not working?

So i have a iphone 3gs but when i click the of button nothing happens and when i click the setting for call (vibrate or sound) i can't feel the vibrate and when i wanna turn up the volume it dosen't show the bell so what sould i do

This means that the volume rocker is broken, so you will have to go to the Apple Store to get it repaired. It may not be worth it at this point, since it is now the older model.

You'd have to go and pay to get it fixed. It's pointless, you could get a 4 for free if you upgrade, or you could prolly find a cheap one online for like 100 bucks. You'd prolly get charged at least 50 bucks just to get the volume rocker fixed.