polaris extended warranty

I have a 2014 Rzr 800 50" with extended warranty, I busted my belt and when it snapped it wrapped around the shaft puncturing the oil seal. I brought it to the dealer and they said should be covered under warranty. the next day I recieved a call from warranty and they told me it would not be covered because it was caused by the belt. 10 hours labour and $300 worth of parts. Has anyone had any trouble like this before?