Tata Motors — Extended Warranty not delivered

Before making a deal for Tata Zest KA04 MQ3477, Extended warranty was included in the Quotation sheet and now it is been denied by just stating it was just substracted from the amount. However the discussion happened with Tata motors Territory sales manager as well and was been commited by himself only to deliver the vehicle at 6, 50, 000 Rs. Whereas he now just quite on his statements and i have to suffer as i have taken a delivery by trusting them and didn't check the Document of Extended warranty while taking a delivery.