Clicks Lemon tree hiding stock

I went to clicks lemon tree to purchase a kettle that is on special,I first checked online and it showed me that it is in stock in lemon tree clicks.When I arrive there I was told that they were finished from yesterday,I requested to see the manager as it was still showing that it is in stock.when I speak to the manager she was not interested in speaking to us at first she said they were finished yesterday when I continue questioning her she said they were finished today.even now the cattle still shows that it is in stock so why is it showing in stock by 11h54 if it was finished yesterday?