Snap on tools Reposed a tool box with property in it that is not theres Hammond Louisiana

I was in a contract with snap on for a tool box and some tools well I had a lot of family issues and depression so I had to take time off work so I was on able to make payments for a month I understand they have a right to take the tool box and "there" tools but I have tools in there that have been passed down and nothing to do with them I even tried to get caught back up with payments but they didn't want to do that .

At first they told me they would give me my other stuff by the end of the month but now they say they are keeping all my stuff as collateral , I don't understand how they got all there property back and can keep stuff that they didn't sell to me or belongs to them. I work hard for the little bit I have please help.