Sony Ericsson - U 100i Yari — fake reassurance for repairing handset from past 2 n half months

Address:

New Delhi, Delhi

Sir, i hav given my sony erricson u100i "yari" handset @ sony erricson service center on 1st of september 2010 against a job sheet,with an assurance of repairing it in 10 days,but i didnt get my phone in my hands uptill now,......it was in warranty period when i handover my ph to them along with n xerox of my orignal phone bill....but after every ten days they are giving me fake assurance and extending the time limit.....
Even my ph's warranty is lapsed on 25 october2010,...n i didnt used my phone since 5 august.....i spent more than half of my pocket money in travelling it to their center.......
& d biggest shock for me is dat when i heard few days back from d dealers dat d handset u 100i is not available in the market now..........sir plz help me.......take any strict action regarding dis as soon as possible...........
MOHIT GROVER
my email id- "[protected]@yahoo.com"
job sheet number- SE310VRO10066
ADDRESS OF SONY SERVICE CENTER- vaisgnavi services rohini,c-11/33,sec-3,opp NDPL office,rohini...ph no.[protected],[protected]