Samsung Galaxy Mobile — Customer care negligence & delay by Samsung Service center

I purchased Samsung Galaxy 3 handset on 20th June online. After less than 2 months, its software crashed. Service center at Bharatpur could not get the problem resolved. So, I called customer care and asked the location of the nearest centers. The center whose address I got from them, was closed weeks back. I finally found out the location of new Service Center i.e. A-care Kheria. Though I had called the manager prior to visiting, but when I reached the center, he refused to attend to my problem.
After lots of trouble and visiting Kheria center several times, I was able to get the original problem resolved. But when I received the handset, its ringer was damaged and each and every screw was missing. Even the spare ringer is not available in my city. After about 2 months of struggling, I am helpless. The handset cost me Rs. 9,000 and purchased from HomeShop18. They also forwarded my complaint to Samsung, but it didn't help. I have used handsets of Nokia and LG, but never faced a single issue on the part of service center. Even after so much has happened, Samsung is unwilling to get my handset replaced or refunded.