Answer:
I contain six letters minus one and you got twelve.
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.
I must be broken before you can use me.
Send poorly behaved children to me and let them sit here.
The more you add the less it weighs. What is it?
According to the music industry, you can count on a midnight train and the devil to turn up here.