This is when I prefer to sell on other Marketplaces. At least Amazon can
say 30 days which is bad enough, but stick to it. I have Returns over 42
days and Ebay still will not close. There has been no activity. Their
team said, it is now all automated...
If it was only 4 days and they closed the return in error, then you
should contact them right away. They stand behind any mistakes and
supports sellers much more than amazon does. Something doesn’t add up.