The Indian authorities are perfectly aware of what's going on in their country. The fact of the matter is that many of the people involved in these scams are paying off the very people that are responsible for preventing them. That's the way things are in India & that's the way it's been for millennia. Graft & corruption are the only things that keep the wheels turning in most parts of India. In many places the wealthiest people are those that are in law enforcement. Most of whom haven't received an actual, official paycheck in recent memory & if they have it wouldn't have covered the cost of having their uniforms cleaned and pressed.
When it comes to Indian Scammers it's good to know your enemy. The more you know about Indian Scammers the more disgusted with them you'll find yourself. They come from the lower end of a highly corrupt society. To them what they do is almost considered normal. Being a "Cheat" is what they think of as being their job. They are lowly beings. Treat them as such.
Live Well.
Gunnar