Can anyone clarify what are the charges of trading account of HDFC bank?

I found that they put something called Pledge Services and Debt Transactions – Sell.Can anybody tell me what are these two services and when charged? Also could you please tell me do they charge anything while buying the stock or only they charge while selling?? If I buy a stock of 10000rs and exit when it is 10200 then is there any profit I will do..I mean what could be the charges for this bothway transaction.