Lenskart — product not delivered and no proper response

Ordered lens of john jacobs black silver full rim aviator john jacobs supreme steel jj e11545 - c1 eyeglasses worth rs. 3360. I was told by the store representative that my item will be delivered by 12th june 2020. Today is 16th june 2020 and i have not still received my package. I neither heard anything from lenskart nor from the courier partner 'ecom express'.

Store representatives are also not having any idea on the package when i approached them.

This has been the worst experience for me. Never expected this kind of service from lenskart.