Kotak Securities Cheating by charging. Review on Kotak Securities Ltd (Kotak)

This time I am very disappointed service of kotak security. I am very old customer of Kotak Securities right from the day when it opened branch in our city. after opening a account with kotak everything is fine but Since I was making investment in small lots. I found their account suitable and I was being charged with flat brokerage. Now I am being humiliated by the company by suddenly changing brokerage as minimum brokerage per trade at Rs 21/- irrespective of quantum. I was made to invest in small lots and my 90% of holdings are small lots only. Now after 12 years they have suddenly started charging minimum brokerage and not even given sufficient time to liquidate small holdings. This is nothing but cheating and unfair trade practice. They are also not furnishing details sought by me.this type of false commitment not acceptable.