Incredible Connection just pathetic

Hallo

I bought an acer and after two years the hinge in the corner broke(apperntly this is an acer problem). We took out an extended warranty. First we had problem with the warranty and at last they said they wil fix it. After a month and a half they phoned me and said my laptop is back at the shop BUT it does not want to come on or charge (my laptop I had sent in worked 100%)

I went in to go and talk to them about what is going to happen now. They showed me my laptop. Their was marks really bad marks on where the forced my laptop open. The hinge that was broken and fixed you can see if you close my laptop has stil a gap. Which means later in it will just break again. Where the keyboard and screen connected there was paper like things coming out. My keyboard has a gap in the side. I tried to phone and tell them that this was not how I sent in my laptop. They refuse to see in the matter. I know ots alot to ask just toe replace my laptop. But I am a student and needs a working laptop they refuse to own up on their mistake. What can we do? I feel that incredible connection is pathetic.