HO / HP Notebook 4530s — Company not repairing the product under warranty

Address:

Central Delhi, Delhi

I have purchased a HP laptop from Dubai on 1/08/2012 and it carries a international warranty or 1 year. The Laptop got a Harddisk problem on 18/12/2012 and a complaint was raised with HP company. But the company people are saying the bill cannot be vaildated and not providing any support further. Kindly help as the company is not replacing the faulty part within Warranty.
The have not even initiated any communication with Laptop dealier in Dubai.
Copy of invoice bill is attached from your reference.