Sony India — Phone Not Working Even After Replacement

Address:

Jaipur, Rajasthan

Hi, I m a Sony user from last November 2013, i bought Sony Xperia SP and faced a lot of problem with that product like Hanging Issues, Touch Not working when we keep phone on flat surface, 2 Times phone got dead. Sony provided me a new handset as replacement on this 1st of November after a long fight on mails and service center guys, but this time again i got the same problems in new phone also which i faced in previous handset. when i contact to Sony Service Center, they said it is a manufacturing problem but not giving this in writing, Sony India team saying (Delhi) if you will face the same problem than you will have to submit phone again on Service center for a solution. Just i m asking to them, why I cant get a permanent solution ?? And i don't have too much time to waste on your service center which i was doing from last 1 year. I need my cash back if they cant provide a permanent solution even after i proved the problem in front of Service Team of Local Service Center. Please provide me a solution ASAP...