Samsung / Mobile Sgh L700 — Mobile Fault

I bought Samsung mobile SGH L 700 on 27.07.2009. It lost its display on 10.11.09. I handed over to the nearby Authorized service centre. Vishnu Electronics, Pattabiram st, Thillai nagar, Trichy. Service engineer replied to deliver the mobile within a week. whenever I queried they answer that the mobile would be returned with in a week and the parts not available. they told to deliver mobile on 6.1.10. But when i queried today they reply that 10 days time required for receiving the accesseories. I Lost hope that they return back my mobile.

My details: A.Valavan,20B6 Indiranagar,Thuraiyur Mobile [protected].
Date of purchase: 29.07.2009
Service centre:Vishnu Electronics, Pattabiram st, Thillai nagar, Trichy
Phone[protected]
work order No: 11395
Date of submission: 12.11.2009
Sir kindly suggest for my problem
Thanking you sir