At some point Amazon shipped me 5 CPUs in five boxes in a larger branded box instead of just one. I sent four back and didn't even get a "sorry for your trouble

At some point Amazon shipped me 5 CPUs in five boxes in a larger branded box instead of just one. I sent four back and didn't even get a "sorry for your trouble". I wonder if that factors in somehow. I also wonder - since the box containing five CPUs looked like a "single product" box - how often that must have happened.