I previously had a Dmat account in Religare where my brokerage charges were 3/30....Then I shifted to Nirmal bang where my charges were supposed to be 2/20 as per the deal ..I have been trading there regularly for last 2 months but the mistake which I commited was that I never checked my statements..2 days backs when I checked I found that the brokerage being charged to my account was 5/50...Now the company Nirmal Bang people are hesitating in correcting the previous deductions..What should I do about it?