Sometimes it's good to have a fresh start with your banking and I'll be happy to show you how.
To disconnect a bank account, follow the steps below:
In the navigation bar, click Banking, and then select the Banking sub-tab.
The account stays in QuickBooks, but isn't automatically updated with downloaded transactions. To delete an account: (Be sure you understand the effects if you fully delete an account.)
Give this a try and if you need further assistance, I recommend contacting our support team using this link.