Amazon review: Amazon device trade in cascading incompetencies leading to being unfairly charged

The descriptor says it all. But the last customer service agent ("Daniel") with whom I dealt (after having been told that I would receive no further emails about this botched Amazon return) was exceptionally rude, smug, and arrogant.

It all started when I discovered (after having purchased ONE) of the newer updated Fire Cubes. I then decided (unwisely perhaps) to update ALL of my Fire TV devices. There was a trade-in credit during one of their "Amazon Day" sales and I decided to take advantage of it. This should've been interpreted as a GOOD thing for Amazon.com, but it wasn't. I was shipped the second Fire Cube and later the 4K Firesticks after receiving a single shipping label. I waited for further labels and they never showed up. So I sent ALL of the devices (they wouldn't all fit in one box, so I used another Amazon box) under the single label. They were picked up and shipped. Then I started to receive notifications of the return period having expired. I called and thought that the situation was resolved and that I would receive no further emails or incorrect deductions for my trade-in devices. But they have not stopped. I received one again earlier this week and that's when I called customer service and got the single most incompetent customer service agent I've ever encountered on Amazon. A $5.00 courtesy credit would've solved the matter, but ill will created with me as an unvalued customer was for "Daniel" a far more preferable outcome. I've done business for over twenty years with Amazon and have been a loyal and responsible customer for that entire time. Instead of getting an email asking if the situation has resolved my issue or not, I received an even MORE offensive email where HE threatened to terminate my account because I had the temerity to point out where AMAZON dropped the ball with respect to the labels and the returns in general. Maybe most people don't replace one device at a time. I'm still trying to figure out what went wrong, I just know that THEY have my trade-in devices and are trying to weasel out of the trade-in credits which I should, by the terms of their own agreements, receive. If I had to translate the entire experience into a single sentence, it would probably come close to "Hurry up and die, Boomer". I am disabled, and I do not tolerate abuse well. Nor will I in the future. This could be a class action in the making, but MANY people will have to know about it in order for it to take place, which is my primary (not the $5.00, although I don't have it to spare) purpose for posting this complaint.