I was able to call Disney at (407)566-4985 option 2. They will tell you how many park days and plus admissions you have left. I was happily surprised when I called. I believe the office is closed during the weekends...Good Luck!
I would try again...hopefully you will get someone different. I only called this past Monday and I was able to find out on 4 passes dating back to 2004. I had gotten the phone number off another posting in Disboards...I believe on the budget board. Good Luck!!