Brokerage charges of ICICI direct

So the thing is I had done some trades on5 dec'24 and 6 dec'24 in fno at ICIC direct.sk while i was checking the trades reports I have found out that in 5dec the brokerage was 1.8 per unit and on 6 dec it was 4.5 unit. What should i do.. also i traded yesterday the brokerage was 0.6 per unit. Does this happened to anyone ? Or is there anything I should do..apart from closing the demat account