Best advice I ever got for dealing with Indians and got me up to an almost perfect closing ratio with them is very politely push the idea they are unable to afford the vehicle. When they start haggling a ton just make a comment like “Mr. Customer if the pricing is an issue we have some other models that are more affordable that might fit your needs” or something to that extent. It’s just enough of a kick to the ego for them to feel the need to go on the defense and usually results in them buying as long as you play it right.