HDFC Bank Securities — I'm complaining about sell price

I have sold shares of d. P wires on january 1, 2018 when sell price of share was 85.80 per share but contract note has been issued with sell price of 80.2 per share. This is really injustice and i'll have to lodge complaint with higher authories, if not resolved.

Request you to kindly thoroughly investigate the matter and resolve the same to the earliest.

Thanks