Trackon Couriers — guwahati track on has lost my goods

Address:

Kamrup Metropolitan, Assam, 781006

[protected] is the consignment number of my materials. I visited thrice for the same courier but they told me that it got lost. How can it be possible for such a highly reputed courier company. The employee even don't respond properly.it was a pH measure instrument sent to me by the company. Now company will not send another piece.