Do you mean the Kindle is locked with a passcode or do you mean the Amazon account password?
Which Kindle model do you have?
Take a look here: http://www.oberondesign.com/pages/identify-your-kindle-model
If you are referring to the automated offers for remote assistance or phone call, please ignore them; they are auto generated.
You do not need the box-- The link that I have provided will show you the front of the Kindles and tell you the model of it.
Look here: http://www.oberondesign.com/pages/identify-your-kindle-model