Here are a couple suggestions for you...

First, go to the www.sprint.com website and log in...fire off a letter to corporate and explain your situation and see if they could help you. Sometimes it takes going to the top management to get a problem resolved.

Second, if this was an employee plan, check with your rep and see if they could help you out.

Sprint has been known for their customer service blunders in the past....I hope you can get this resolved and if you get slapped with the disconnection fee, I would complain like crazy!