Clovia.com — undergarment defect

Address:

Mumbai City, Maharashtra, 400059

My order number is #5292494
We had ordered undergarments in the offer 4 @799, two of which when dipped in plain water had a color defect. Images were clicked and sent to the concerned email id of clovia within a day. There was no response from their side. I called them repeatedly and they kept on asking for 24-48 hours each time.
It's been almost a week now since i have raised the concern.
The return request too has been generated but every evening i get a message from the courier company stating that i have cancelled the pick-up request, which is certainly not true.
I have been in constant contact with their representatives but they seem totally uninterested.