“We are not able to send you a new one since it’s a prize.”

This is the key sentence from them….shucks.

Contact Xtar China support. ( this is on the assumption that the sender of the light is not Xtar China)

service@xtar.cc

The factory should do something about the warranty…it won’t matter whether it’s a prize, a gift from a friend or bought online.

Include in your email the serial number of the light.