Hi there,
I never was in INdia, but as they have bicycles there, why don't you buy a whole wheel? The front wheel is not so critical, so a cheap one is sufficient. Normaly you can't use the old spokes, because often the rim diameter for the spokes differs from rim to rim. And in Germany everybody says it is cheaper to buy the whole wheel, as handcraft is expensive, Ok India is another story.
Try to look if you can't find a shop via the website of a bike manufacturer, they should have a dealer in India.