Apple India — MacBook air damaged by company

Address: Hazratganj , Lucknow

Actually I took my macbook air to service centre for software and rebooting issues only. They got it serviced on their own. After 7to 8 days of servicing it got off again. I took it again and they are saying it's motherboard is corrosive. So problem is that how macbook can corrode in a week. They got my macbook damaged and asking me for 34000 rupees for its repair again.