Went for a hard drive failure in my laptop. They "...

Went for a hard drive failure in my laptop. They "fixed it" but then it stopped working. Come to find out that they dropped a loose screw inside it and decided to use one of their own screws to tighten one of the components. This, of course, short-circuited my laptop and fried my motherboard. The repair service tried to claim that it wasn't their fault and suggested that I buy a new laptop from their store.