Exchange charges

I feel some kind of issues,
Even through exchange fees is based on turnover. Yet the chargers are every high in higher slab and rest is kept as profit.

See below pictures. Big brokers have more turnover and instead of passing on less slab. They pass on higher slab.

NSE, BSE should come with some kind of mechanism. Where they should deduct charges from brokers pool bank account as clients money is segregated and give statement to brokers