what ever happens, DO NOT COME TO IN.
Do not even set foot in India (forget your home toen, district, state or even another state)
you are being blackmailed.
and choice you’ve are many, but recourse is ONLY ONE.
Nullify theirpressure points!!
ask your parents, sister, relatives to move as away as possible, and leaving as little trace as possible.
then get a lawyer to sweat it out in the court.
know that the marriage, relations, love etc you know as a man before- are all gone now. Do not be emotional about that being gone.
Build up your life, fortify your defenses, your ex wife is a leech, better stay away. Get a divorce, and while doing so minimize the damage they can do, and threaten with your family in India.