ICICI Bank — request to refund amount deducted for dp charges

Branch: h 1a/34, sector 63, gautam buddha nagar, noida, up, in, 201301

On 28/09/2020 i could see amount 826.00 debited against dmc/in[protected] dp chgs till jun-20.

I have never requested this saving account to be demat account. Why you have not notified me before coverting it to demat account.
This account is my opened in year 2015. And i had a word with customer care who says this account is demat account since 2017. So therefore every year i, was charged with annual dp which i was not aware.

Pls help me for getting all refund as i, never wish to make it a demat account and closing this feature of demat account going forward.