new rzr xp4

Hey new to this site just bought a new rzr xp 4 Saturday and it broke Sunday left rear axle I swear I was trail riding no jumping or rough riding up in silverwood what the over ? Top it off I took it to the dealer and supposedly it might not be under warranty because it might have been abuse that the axles have a weak point if over torqued and yeah it has a weak point because polaris put it there I’m really frustrated any suggestions? ?