Housefull.co.in — Not getting refund or product

Address:

Tamil Nadu

HDC-9954/2013/322- Order no- 21945
at housefull.co.in
Rs 2790 Cody book case
Order placed on 31/3/13. I recieved a phone call within an hour and the executive said its out of delivery area. So i requested them for cancellation immediately.
I kept calling customer care for cancellation and i was assured a refund.
3 days later when i call the customer care they tell me product is already shipped and they cannot cancel
I mailed them repeatedly.. I was assured if product not delivered by 16/4/13 i will get the refund.
I again mailed them asking for refund. I get a email on 21/4/13 from the housefull.co.in apologetically asking for 2 more days for delivery.
Today 25/4/13 they have stopped responding to my mails.
What i cannot understand is why cant they refund it if they cant deliver the product. My refund request was given within 1 hour of ordering as they themselves said they cant deliver it to the particular pin code