Checkers has ****** me of my Goods

I run a small deco company from home and was tasked last year to do a Christmas deco for Checkers in Balfour Park. In good faith , I completed the job as per their liking and their request. When the xmas deco was taken down, checkers staff did not inform me of the items being taken down and subsequently my fairy lights which were used in the deco was ****** by one of their staff memebrs. Now checkers and the regional manager Selva Pillay point blank refuses to reimburse me for my lights that were ****** from their store. He keeps passing the buck and making me a total idiot. I don't take kindly to being made a fool and seeing that they are so massive, they think that they can do anything and get away with it. I want all other business to know of how This region treats their small suppliers and think twice before doing business with them.