Kotak Mahindra Bank — Bank charging De mat charges which is NIL for PRIVY LEAGUE CUSTOMERS

I am a Privy League Bank customer of Kotak Mahindra bank, and also have my trading account with them.I was informed that there will be no demat charges if I open my account in their Bank Branch securities.I switched mine from their Ghatkopar branch to the Bank's securities just to save on monthly demat charges.But it was not so as they kept charging me demat charges month wise directly from the linked Privy league saving account.I objected and asked for explanation from my RM, But no suitable reply received so far.The only reply on my email that I received from their executive Shweta two days back, that too after pursuing for months, that they are actually brokerage charges.This is rediculous.I am paying brokerage charges each time that I buy or sell any shares.Then why am I being slapped with double the brokerage charges.I have this photo added as a proof to show that Privy League Customers of the Bank are not charged Demat fees.But sorry to say I am being charged the same and no proper explaination or reply being sent to me after all the emails and phone calls that I have made to them.Please see the picture and I have all the records of the correspondence email with me to substantiate my case.Thanks