Pure, find sth else if you dont like it so much.  I am sure you can find sth rightway.  Where are you btw?  If you are in any town populated with Neps you will easily find sth else.  You dont have to take that disgrace.  The more you take the more you will get.

Get  a lawyer and tell them you will go 50/50 with the settlement and no payment up front.  You have to prove beyond reasonable doubt that laws are being broken.  To charge you 50% for meal is legal.  Even McD does that.  Proving is going to be hard but can be done.

If you are legal and have no incidents ( they will try to prove you are a bad employee, coming late, stealing etc etc)  Case wont be settled over night and your name might get floated around Indian and Nepalese community --- thats one of the repercussion

Many of us gone through your experience in our own ways so you are not the only one but the only difference is most of us decided to make a change...

PS Consult a professional before any legal actions.