Samsung Sgh J 600 Mobile — Display not working..

I bought this mobile on 11 th May'08 and got a one year warranty. Now, it's display is not working and it's still in warranty. The nearest service centre operator is saying that they don't have the part to be exchanged. From last 2 weeks, they are saying the same thing. Moreover they don't have a registration system whereby I can prove that I lodged the complaint in the warranty. My phone's warranty is about to over now.

Please convey the same to the relevent centre.
Nearest Service centre : Janus Electronics, VASUNDHARA, Gzbd.