SonyEricsson — xperia X8 browser not working

Address: Bangalore, Karnataka

We bought sonyericsson Xperia X8 phone about 2 months back, We took internet connection from service providers, we configured the settings also, But when we checked its browser wasn't working, even
cudn't download applications on it, Then we took the phone to Sony ericsson service centre in RT Nagar,Bangalore,India. They said it will be fixed and asked us to collect the phone next day. so Next day we went and collected phone, they said everything is fixed, The guy didn't respond properly, we came back home and checked the browser which wasn't working, even we aren't able to download the applications, Sonyericsson service centre guys didn't fix anything, they did nothing and handed the phone back to us next day as it is, these guys are really dont know how to fix the problem, they don't even respond properly, Now trying to contact Sonyericsson through feedback form, Dont know whether we get help or not. if anyone has some solutions please help.