On processing your Account opening Form:

If there is a debit or credit transaction in your Demat account

An entry will be made in your monthly transaction cum billing statement with the charges debited to your linked bank account. The debits of charges to your bank account will be reflected in the quarterly statement of your bank account, if you have given a standing instruction for collection of bills from your SB account.

If you have submitted a requested for change in your address, nomination details, bank details etc.

For the bank to accept changes and have the same reflected in the Client master list, you must furnish a letter detailing the additional requirements with necessary documentation.