A. 1. Open the Qapital app and go to the 'Settings' or 'Accounts' section. 2. Look for the option to manage linked accounts. 3. If you see the bank account listed, tap on it and look for a 'Remove' or 'Disconnect' option.

B. 4. If the option is not available, consider contacting your bank to temporarily freeze the account or change your login credentials to prevent access.