Pantaloons — Sprint, pantaloons within warranty period, demanding 60% of purchase amount for a minor repair (Product : 11548 pl c1)

Address:

Kolkata, West Bengal, 700019

I had purchased a Sunglasses ( 11548 PL C1) of Sprint on 18th April 2015 amounting approx 2500 INR from Pantaloons, Gariahat, Kolkata with 1 year of Warranty. I traveled to Spain and at the airport one of the temple of newly purchased Sunglasses was broken due to a mild touch of the curtain at the x-ray scanning chamber.

Recently in February 2016 (within warranty Period), I requested Sprint executive at the pantaloons, Gariahat, Kolkata to repair it and I will pay the amount as the broken item is out of warranty T & C.
Next day the executive from Pantaloons called me and informed, the model is obsolete and I have to pay 60% of the Product cost. I was really shocked, only to replace the temple I have to pay this huge amount. Why I will purchase such a costly item, if there is no customer service at all.
I actually don't know the rules and regulation of any brand, my simple question to Sprint management, is it a feasible amount claimed to repair? As a customer, I will not bother, within 1 year, whether the model will be obsolete or not. You should provide better solution to the customer for their satisfaction.