RE: DP Charges

#1
Hi,
I recently opened an online account with Motilal Oswal.
I bought a total of 76 shares of India Bulls Real Estate and 3 of Tech Mahindra for a start, on Delivery basis.
I also did an Intraday trade of 140 (70 Bought/ 70 Sold) India Bulls Real Estate shares, in which I earned a profit of just 55/-.

My question concerns mainly the intraday trade, as I haven't sold any of the above mentioned shares from my demat holding which I bought on delivery.
I received today a Ledger/DP Statement wherein it showed I was charged an amount of 477/- towards "DP Charges for the month of February". Can anyone please tell me if this is right, or has there been any mistake on Motilal Oswal's part? Will I have to pay DP charges every time I carry out an intraday trade? Or is it possible that I have been charged for BUYING shares aswell?
If I'm going to be charged 477/- for a trade where I earned a profit of just 55/-..then it seems pointless to do any trades with MO.

Any help will be appreciated, Thank you.