Saraf Furniture / Insaraf.com — Failed to deliver on the promised date after taking full delivery

My order I'd with insaraf is 1NSF[protected]
I have placed my oder in 2 nd of December by making a full payment for my product as there is no option for paying on delivery.
Delivery time mentioned on the website while ordering was 11 days
It is already 18 days since my order and not received the product.they are not allowing me to cancel the order also and whenever I call their customer care says next week we will deliver.

My money is hung now and I am being cheated by them.