Modern life is too complicated

So I ordered a set of Gorilla lug nuts from Amazon. They come in a pack of 4, so if you want a whole set you have to order 5 packs. Well, they show up today along with another thing I tacked onto the order to get free shipping. Problem is, there are only 4 packs in the box. I think to myself, "Self, I know you ordered 5 packs, right? Right?" So I look at the packing label, and dang if it doesn't say there were 4 packs in the order. So I say "Crap" or something like that, and I sit down at my computer to order another pack. To make sure I get the right part number, I go to my Amazon orders list and find the order of 4 packs of Gorilla lug nuts. Just as I'm about to click on the "Buy it again" button, I notice there's another order waiting to be shipped: one package of Gorilla lug nuts. It seems I did order 5, but they decided to ship my order from two different places. Sometimes life is just too complicated.