Bad luck, or common occurrence? Zagg, Xtremeguard, Slickwraps. topic

So here is the story:
First I ordered 2 screen protectors and a slim matte case from xtremeguard for my N6, and received all 3 for the N5.

Then I ordered a zagg glass protector, also received one for the N5.

And today the third occurrence happened, this time with slickwraps. This one is the most understandable as I ordered 1 nexus 6 skin, and 1 nexus 5 skin, but received both designs for the N5.

I dont really care about the mistakes as so far all the companies have been great about making it right, and right away. I am just curious if anyone else had similar luck.