Sony Vaio and Sony Warranty Sony Vaio Laptop-fan failure,melter plastic,disoloration-bogguss sony warranty!!! Internet

I work for US Government, I feel that I was unfairly denied warranty service as well as any adequate response from Sony. In August09, I bought new laptop Sony Vaio. Soon after I noticed loud noises and computer overheating. I contacted Sony and was informed that this specific model series might have fan failure. Sony serviced the computer onsite and replaced the fan. During the repair I mentioned to specialist about discoloration and melted plastic and was informed that I should follow up with Warranty for repair. On June10, I asked by Sony Warranty to send it for repair. After Sony received the computer I received a reply from Sony that I'll need to pay for parts and labor with no explanation. I called(866)942-9667 and I was surprised to hear that discoloration and melted parts were not result of interior defects. My laptop was hardly used due to fan failure since I had to purchase a new computer from my business use. I described to them that my computer is in mint condition with weird discoloration that is not result of careless use. After 45 minutes and being put on hold, I asked representative to send me written statement for why I am being denied a service. To my surprise Sony representative made it quite clear no such statement can be given in writing. It's clear that denied claims don't require any justification from Sony's. I was also denied supervisor. I was also denied any email or phone to file my complaint- I was told that I had no further options. This is unethical business practice from Sony.Its quite clear that the previous overheat from fan failure caused the melting and discoloration - with Sony to replace melted and discolorated parts. In return I was even denied a simple written response or supervisor. OUTRAGEOUS!
It's hard to believe that sony treats this way customers that have warranty and get no reliable explanation nor service.I didn't ask for new laptop,I do risk that previous heat and fan problem, might have also melted something inside the laptop since it has even shown up on the outer plastic.I only wanted repair/exchange of that melted and discoloration parts, which compared to retail value of the laptop in time I bought it-$1600, is only $180. I'm really disappointed and due to offered service, I highly doubt if I'm ever going to keep/receive/buy/give any sony products!