First of all very few regulated brokers are available, secondly even regulated brokers play mischief knowing fully well that forex trading in India is illegal, hence you can not go to regulatory authority to complain.
If Forex Trading in India is illegal then one should use more than extreme caution trading with brokers over there. If it is difficult to handle regulated brokers how much more unregulated and harsh policies on forex trading in India?
I support doing a thorough due diligence before enrolling with any broker. Auditing & Regulatory Plus Years of Integrity is a plus but anything still can happen.