Is the store that i work at responsible for my car being broken into if i park where there is no working security and cameras?

I work at a HEB and they have us park far away from the store because they say the parking is for the customers. They say they have cameras looking at were we park at and today they broke into my truck and when i went to do the police report. When we went to go check the cameras they said the ones where we park at weren''t connected. I was wondering what can i do about the camera situation because they stoled personal stuff from the truck and HEB dont want to do nothing about it. So what can i do or what thanks