Identifying problem with faulty BD

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I recently ordered Caché/Hidden from hmv. Throughout the movie there's distracting artifacts or noise. I found several reviews in addition to the one here, and none of them mention any problem with the video. I'm going to try to play it on a friend's BD player soon, but I have not had this problem with any other BD.




If you look at the wall to the left of Binoche, you can see lines forming from the noise. There's 4-5 of these horizontal lines throughout the movie, sometimes more noticeable than others. Areas of black sometimes turn blue-ish.

I'm intending to return these, but I wasn't sure what exactly I should write down as the specific fault or what terminology to use.