DVD Entertainment System Help!

Hi,
First time posting on here...Back in July 2012, our '08 Outlook's DVD Entertainment system was replaced by the dealership under our extended warranty. They replaced it with a refurbished model (which still had addresses in the navigation address book from the previous "owner" of it- but that's a different story). Now 15 months later, the refurbished one is now shot. I've had it documented several times with the dealership along with taking many videos of the issue when it happens but because we are out of our extended warranty and parts warranty, they said we are out of luck. I really believe something like that should have lasted more than 15 months.

Does anyone have any suggestions on what to do next? Is there a GM representative that might be able to help? The dealer said a new one is over $1,800.

Thanks!!!