My guess is that they have an algorithm to automatically ban people who abuse the return system. But if you are the unlucky person who gets one defective item after another and returns them, then Amazon bans your account. You are not allowed to buy anything else on Amazon's web site, ever. And it is difficult or impossible to speak to a human to resolve the situation.
https://www.wsj.com/articles/banned-from-amazon-the-shoppers...
My guess is that they have an algorithm to automatically ban people who abuse the return system. But if you are the unlucky person who gets one defective item after another and returns them, then Amazon bans your account. You are not allowed to buy anything else on Amazon's web site, ever. And it is difficult or impossible to speak to a human to resolve the situation.