Snapdeal.com — change my product or refund

Delay in delivering the product!!
Why snapdeal team is failed to deliver the ordered product.
Every time snapdeal team said "Apologies for the delay in delivering your product. Your product has already shipped by the seller, however it has been delayed by the courier service due to reasons beyond our control".
if this courier service is not fit for deliver the product then why snapdeal team not doing any action to that courier service: KNOTT XPRESS.
Only by saying from 30th jan that we are trying our best is not an answer.
first dilvery date was 30 jan. ok i listened to snapdeal team reasons of courier fault
but again delivery date was 5th feb...now again same excuses by snapdeal team that we are trying trying...
there is a limit of my patience.
I HAVE ALREADY MAILED SNAPDEAL ([protected]@snapdeal.com) REGARDING THIS PROBLEM, BUT NO ACTION TAKES ONLY EXCUSES ARE MADE.
Earlier Complaint Number:[protected]not resolve yet)
ORDER NO. [protected]
ORDER DATE- 27 JANUARY 2015
courier boy FIRST TOLD ME THAT HE WILL DELIVER THE PRODUCT ON MONDAY 2ND FEB 2015. BUT NOW HE'S NOT PICKING UP MY CALL FROM TUESDAY.

Dear Raaghul,

Sorry for the inconvenience. This is to inform you that your concern has been noted and our team is
working on it. For any further clarifications, please write to us at [protected]@snapdeal.com and kindly mention your order ID in your subject line.
Thank You for your cooperation.

Regards,
Snapdeal Online Team

Dear SANJAY KUSHWAHA,

Sorry for the inconvenience. This is to inform you that your concern has been noted and our team is
working on it. For any further clarifications, please write to us at [protected]@snapdeal.com and kindly mention your order ID in your subject line.
Thank You for your cooperation.

Regards,
Snapdeal Online Team