Despite paying for Amazon Prime, primarily for fast, free shipping on most items it seems that on-time delivery has become the exception rather than the expectation. Things seemed to change in early 2023. 'Guaranteed delivery date' is not guaranteed at all. It is, at best, an anticipated delivery date. Customer service reps try to explain delays with details which do not resemble what Amazon's order tracking tool is providing me. Which should I believe? Still waiting for item while my home improvement project is once again delayed by a late delivery from Amazon.