Sony Ericsson W550i — bad service

Sir,
I have w550i mobile which is now out of warranty. Some days back it got shut down and i went to the service centre they charged rs.450 but when i came home the same thing happened. Next day i went to the service center thaey charged rs. 250 more and after one day it again got shut. what to do now.

Sony Ericsson W 550i — service provided by authorised service centre of sony ericsson

This has reference to the W 550i mobile phone, given by me in August to sony ericsson authorised service centre at Faridabad ---- Ms R.T Outsourcing services ltd .( Case ID : N8FBD : 18/51 ). My complaint was that keys 0, 5 were not working, rest the phone was working perfectly, I could receive and make calls, listen to music, camera was ok . To my utter shock they charged me 850/- and gave back the phone with more defects, now this phone is not getting charged, does not start . When I went to them, they kept the phone again for 10 days and have returned it back to me saying that the mother board is defective and we do not spare parts, even the company does not have spare parts and therefore your phone cannot be repaired . With all this I have been cheated by Sony Ericsson . First thier service centre charged me 850/- and spoilt my phone further and secondly even after 25 days they have just returned my phone saying it cannot be repaired . The story does not end here then I contacted the main service centre and they registered a case and in return sony ericsson gave me the engineers name also looking into my case and told me to deposit the phone at the service centre and said they will look into the matter but yesterday I got a call from the same centre saying it cannot be repared. Now what do I do? I gave a perfectly ok mobile and got a toy back from sony erricsson service centre.

sony ericsson w550i — No proper response from service center

I had give one mobile phones for service with the authorised service center in Patna(budh marg) Model number W550i, IMIE number 35744200.058135.8.
when i got my mobile from service center after repaireng, i was socked becouse the body of mobile was changed and was in very bad condition. when i told the incharge of service center then he replied than he will change the body after 15 days because it was not available at that time.
after 15 days he told that body is not available hence the service spares are not in the market and they need to go fo the ordering the same. Why is that with out the spare parts one should have a serive center or on should launch a product and advertise it. I was asked to wait for another two weeks.
but the resut was same.
i am very disatisfied with service of sony erricsson.
If my body will not be changed then i will never try to buy a new sony erricsson phone.
please do something for my phone.