My faulty computer

i have been having problems with my macbook for a while, my hard drive crashed, applecare had to replace the logic board (only after the second time sending it in because they didnt fix it right the first time). Then earphone jack stopped working, so i had the corresponding board replaced. This time the battery icon has an x and it won't charge. I believe that their was a problem after my earphone jack was replaced, because a crack started to form under the macbook by the USB ports and the seam of the palm rest was lifting on the side. i think this was the repair mans fault, because my computer was not like this before. But when i took my computer to the apple store to be looked at, they said that their was an iternal power problem, and it wouldnt be placed under warranty because of the crack. They were going to charge like $400. I am so fed up with having a macbook, and although i love my macs, i might have to switch over to pc.

anyone else have similar experiences?

macbook Mac OS X (10.4.8)