Hi,
1st of all I want to clarify a misconception. there are only 2 chabad shluchim in india, in mumbai and bangalore. the rest aren't chabad but Messianics who took the name of chabad without permission and a lot of them don't even know basic stuff of judaism like kashrus etc. I'm saying this because I know from first hand about different things in some of those yellow places.
In mumbai, the only kosher place to go is the chabad house. there's someone there in the community, a secular jew which is not even shomer shabbos who pretends having kosher food etc but the only guy supervising it is himself...
Anyway India is a crazy country! like don't expect anything because nothing is like we think.
Actually, in mumbai there's a very nice guy, bentzion, he's the gabai in the shul "kneseth eliahoo" (in the tourist aria) and he knows everyhing about the jewish history here in mumbai. he took me for a tour in all the different shuls cemetaries and jewish places for just 500 rupees.
I'll stop here for now