I went through a round of this (elsewhere). Not to focus specifically on India, but in my case I was asked to train two Indians. Over the course of a couple of months, they proved unable to effectively do the job. But, budget and power relationships often win out over effectively doing the job. Especially in a larger company, where any blame for resulting declines in productivity or outright failure, gets spread around to the point where those responsible for the decision are not adversely affected.

I also saw the latter with some of my domestic colleagues. For a while, I would step into the gap and ensure that things were corrected.

With the benefit of experience and hindsight, I would do things differently. Learn to pro-actively walk away from such circunstances, as soon as you can. The longer you stay, the more you contribute to the success of those making such policy and the more you risk trapping yourself in the results.