Sony India — I gave new phone to sony service center, in replacement they gave me old scratched phone

Sony Service People Cheated me . Just today on 23rd July 2014 i received my replacement phone Sony Xperia Z1. My new phone was not working fine becz it had some Sim network problem. Network was not working on the phone. Some how Sony service centre guys took the phone n told me u will get n new fresh phone. So after waiting for more than a week today i received the phone. But i was shocked after seeing the phone is in poor condition, full of scratches n power key totally worst. Both sides of Xperia Z1 are with scratches. I want my new phone. I gave my new phone to sony people in response they gave me old scratched phone. This is totally cheating with a customer. I want new phone :(