Dear...

As I told you before go to Indian Embassy and tell them about your situation.

There are no such laws to take cash from you if you are in probation period.

And regarding the offer what you signed, As per my knowledge it is not valid. If it is a contract attested by ministry then it is ok. But there they cant add these points of deduction of money and all.

And again, If you go to Indian Embassy they will be helping you to the maximum.

All the best wishes.....