Walmart Walmart steal things from customer's car Edinburg, Texas

While I was changing battery for my car at Walmart in Edinburg TX, the employ of walmart steal DVD player, radar detactor, CD player and power convertor from inside of my car. 

After I found out the items are missing, I went back to Walmart and talk to their management about that, but they do not want to find out what is going on.  They keep saying report to the police and talk to police police investigator.

The police investigator told me he saw the video but he did not see the employ of Walmart stealing.  But later, when I talk to one of Walmart manager over the phone, I found the police investigator actualy did not even see the video. 

It seems like nobody care about customer lost their items including Police and Walmart.

Any help????