In June 2018, I ordered a soccer magazine, "Futbol Total", for my soccer-mad nephew. It said it would arrive in 4-16 weeks, which seemed weird. I waited it out, and no magazine. I contacted them and they said they were on it and it would arrive soon. At 5 months in I just canceled the order, only to get an email saying, "Unfortunately, we weren’t able to cancel the items you requested and these items will soon be shipped." I spent a bunch of time in chat and on the phone getting the runaround, complete with new ticket numbers, promises of personally following up, and even a $20 credit. But they were firm on saying, "Please be assured, we will ship this item very soon."
Occasionally I'd try again, insisting that they either cancel the order or actually ship it. Each time I was told it would be shipped. Long after I'd given up, in late October 2020, they finally canceled it, saying, "We regret to inform you that, due to a technical error, we will not be able to fulfill your order." For all of Amazon's vaunted customer focus, my impression was of a lot of unhappy, fearful customer service staff passing the buck so they could avoid bad metrics.