Hp — wrong false offer given to me which is expired

Address:

Gautam Buddh Nagar, Uttar Pradesh

i purchased HP Pavilion Notebook - 15-p208tx dated 31st january 2014 as i carried cash 62000 i purched i late night at 9:20pm the offer was given to me ( THE GREAT WINTER OFFER) AT hp.com//in/thegreatwinteroffer Purchased: 01/30/2015 Serial: 5CD4487X70 came home checked to register WEBSITE SAID THE OFFER IS CLOSED IT WAS SUPPOSED TO BE TIL 31ST JAN as i have it written on HP offer page i got with laptop but the offer was not avaiable to register when i website link on 30th night another laptop by my freind same model for 60000 from HP store i a unable to claim the noteboo offer neither its my mistake as tthee website closed offer please help me claim this offer i can pay few extra as in the new offer price is inceased please help me as i am feeling this wrong after many HP laptops purcheses for years please help me