I ordered an dedicated server

I ordered an dedicated server, and after i install OS on it, it automatically Off after 5 mins. and when i create a support ticket they are replying after 2 days. and just tell "We will check your server and fix" what the hell is this, and when i am asking for refund because of i loss my high paying client, they are telling they can't provide refund. What is the scam ?? I suggest you don't use it.