Sony Erison S550i — handset not repaired since last month

respected sir,
i Mr.jayraj A Dulange having Sony Erison Model No.s500i had given my handset for repair defect in handset on 19/8/2008, but till date i am not given prorer answer as to what is the problem .i am repeatedly making calls daily, i am only told yet the handset is not done proper.
its my earnest request pls solve my problem or else i have to take legal action against the same

token no-24 dated 19/8/2008
Imei For the Same- [protected] @ Atul Electronics Solapur, Maharashtra
contact no[protected]/[protected]/[protected]

pls revart the same, if complaint has to be registred else were.
regards
jayraj dulange
+91 [protected]/[protected]
mail id- [protected]@yahoo.co.in