ICICI Bank — Incorrect DMC DP charges

Today I noticed that ICICI bank has deducted Rs. 826 from my account with the description DMC DP Charges. When I tried to google it and understand what it is, I learned that it's Demat account charges which I am not even using. This is fraud done by the bank, and the surprising part is that you don't get an SMS alert for this transaction, we get to know only when you check the statement.