Each time I read a sad story like that in the comfort of my flat, I wonder: what can I do to help them? Then, I can't think of anything, and my mind tries to forget this cruelty being inflicted to others, and I move on with my life...
You may not be able to directly help those currently enslaved by this system. But you can stop consuming the products that it produces, and encourage your friends and family to stop consuming these products.
I wonder the same thing. I think it boils down to donating to charity that helps people like this, and voting with your wallet by not buying products that are involved in this.
For starters you can do what others suggested: don't buy products produced by this kind of labour. Then, you might take the time to ponder the causes of such things happening in the first place. I'll give a hint: it's capitalism, and the reason you don't see exploitation to such an extent in the West is because of the (very bloody) struggles workers waged here during the past two centuries. Then it's up to you what to do with that realization.