Price Changed On My Cruise What Should I Expect.

I booked a cruise in September 2015 for a cruise in May 2016. I recently saw that the price has gone done on the cruise. I called Norwegian and was told that they do not offer the package that I bought. So they could not do anything about the price difference. We are talking about $300 pp less. My invoice is broken down with the cruise on one line and the package on another. I am confused as to why they could not just move me to a balcony room. It is also on sale for less than I paid for an oceanview?My documents have not been made available yet (70+ days until my cruise) seems like an easy fix.