Hi Sarah_21,
Thank you for the post and for letting us know your concern. I'm sorry to hear that you've had this experience and I'll be glad to assist you with this. Making an account inactive will remove that account from appearing in the select list or in the dropdown arrow in the Bank Feeds screen. If it's still showing as your default bank account, the only way to get rid of it would be to delete the bank account via Edit >> Delete Account. However, if transactions have been recorded against it or it is a linked account, you can't delete it. Please let me know how it goes.
Please let me know if you need further help.
Kind regards,
Sai