[Resolved]  Titan Fastrack — Scratch put on the glass by service center

I had purchased a fastrack watch 2 weeks back ( on 17/06/2009). There was problem in the watch and it was getting late by 10 min. I took the watch to the show room. They checked the watch and there was some defect in it. They offered to replace the watch but they didnt had the same colour watch. They asked me take another watch of similar price. But i wanted the same colour model. So they replaced the internal machine of the watch with the machine of another watch of same model. During the replacement they put a scratch on the glass of the watch. When i pointed out the scratch they said that it was there before i brought the watch to the show room. I asked if the scratch was already there why did they initially offer me to take a different watch of similar price.

It is clear that its there mistake and they are not ready own it. Please tell me what should i do to get justice. The details of the show room is given below:
No 47, Raghavendra Complex;
10th Main Road ;
4th Block Jayanagar;
Bangalore - 560011
Ph[protected], 26633934