Category is not updating for drildown bar chart

I am trying to implement Drill-down with stacked bar chart. Issue is when I click on chart it shows drill down detail but it shows more category then I am assigning. So, could you please help me to fix the issue?

My code is available in JSFIDDLE

function setChart(name, categories, data, color, level, type) {
         alert("Chart should have categories :-" + categories.length)
         chart.xAxis[0].setCategories(categories);
         //chart.xAxis[0].categories = categories;
         var dataLen = data.length;

         for (var i = 0; i < chart.series.length; i++) {
            chart.series[0].remove();
         }

         for (var i = 0; i < dataLen; i++) {
            chart.addSeries({
               type: type,
               name: name,
               data: data[i],
               level: level,
               color: color || 'white'
            });
         } 
      }