> Can you give a single example of similar fraud being successfully tackled?

Plenty of such cases here locally. Your point about the language barrier is on the money though, I never really gave that much thought but the number of Dutch speakers in India is most likely so low and the market so small that it isn't worth a massive campaign to them. Especially not if there are millions of gullible people in markets that are more accessible to them.

As for forcing Indian authorities: I've seen up close how corrupt things are there and I have very little hope that that would be a viable avenue to resolution of this problem.