Able to achieve two level drill down
Please refer this http://jsfiddle.net/6LXVQ/2/
Any way to achieve triple level drill down with help of pivot table.
My answer is not visible to me.
Thank you for your question.
Please have a look at our Highcharts with drill-down example.
It has a two-level drill-down, but you are welcome to implement the third level on your side.
Further information about integration with Highcharts could be found in this article.
Also, we suggest browsing Highcharts functionality here: https://www.highcharts.com/.
Hope it helps.