Poor Quality and Service

Have a new Samsung A5 on contract, the phone refuses to switch on, apparently the LCD has been damaged but the screen in intact and they claim as an example that perhaps the phone fell but don't know for sure. This is a manufacturing defect and they want me to pay for it, this is absolutely acceptable, where is the customer service, this agent speaks to me like I owe her this favour and should just listen to what she says. I have a mind of my own.