Nexus 7 Quality Control

So I just recently go a Nexus 7 from the Google play store. I really like the device but I was wondering if other people are having a similar problem. When I press down with some pressure on the screen it starts to distort the screen like I am touching a laptop screen. I have an Iphone 4 and it does not do this. I would never realistically press down this hard on the device but just something I noticed. The reason I noticed this is because the back of my Nexus 7 will have a squeaking or creaking sound when I press down on the top right corner. I am wondering if anyone else has this problem and if I should call customer service about it.

Thank you in advance.