Infibeam.com — Order id # 18195957, 18195935 & 18195885 has cancelled without my knowledge.

Address:	Bangalore, Karnataka, 560002
Website:	www.infibeam.com

Prepaid order confirmed before 15 days and today they self cancelled
Infibeam.com has been confirmed the order id # 18195957, 18195935 and 18195885 before 15 days and they were ready to shipment shortly on 18.3.16. Today they have cancelled above order without my permission due to out of stocks but they have available same products in following link
http://www.infibeam.com/computers_accessories/dell-vostro-3458-notebook-4th-gen-ci3-4gb/p-coac-[protect...⇄

It is cheating to me. They are telling that this products is not available in them product line. I need to claim price difference of rs. 3921/- in each laptop. Therefore! It should be of rs. 11763/- total price difference between booking date and today's prices.