Twice this year Amazon has sent me an entire case of a product instead of just the single item I ordered. I wasn't charged extra and they didn't want anything b

Twice this year Amazon has sent me an entire case of a product instead of just the single item I ordered. I wasn't charged extra and they didn't want anything back. It appears in both cases that in the warehouse a case of the items wasn't opened and individually labeled but instead the case labeled as an individual item. One of the items was an inexpensive home improvement item but the other was a moderately priced computer part. It's crazy that their system is so highly optimized for sending items out that it doesn't make financial sense to retrieve these items.