I didn't downvote you, but as a small-scale seller on Amazon, I received absolutely terrible support when they froze my account over a 12-cent fee that was added retroactively and therefore "past due" before I ever heard about it. They were going to pretty much keep my money and my merchandise and ignore me until I got an AWS rep to get involved.

As a customer, on the other hand, Amazon has among the best service I've ever received.