You can ‘Stop’ a DB and ‘Terminate’ a DB through the UI. If you have deletion protection turned on, you can only stop the DB until it’s turned off, which can also be done through the UI.

You most likely stopped the DB, but the problem there is that AWS will automatically turn on the DB after 7 days. You also still get charged for storage for the time your DB is off.

Sorry to hear that though. I know it’s a really sucky situation to be in.