In my non-Business experience, it doesn't matter, just chat to support. (I'm not suggesting taking the piss, but I've had genuine issues ranging from slightly to very out of their one month return window, and I've had full refunds or replacements without at all unreasonable exertion on my part.)
(Except one actually, very recently, it was a relatively high value Warehouse order that wasn't as described and I returned - no problems accepting/arranging that, but some tardniness on the actual refund coming through. Probably it would have been fine, but I did chase it several times before eventually getting someone willing/with the power to override whatever was making it take weeks to refund after having shown as delivered to their facility. I still think even that experience was better than I get elsewhere, and certainly on the whole it is, that was my worst ever, and it was fine in the end.)
(Except one actually, very recently, it was a relatively high value Warehouse order that wasn't as described and I returned - no problems accepting/arranging that, but some tardniness on the actual refund coming through. Probably it would have been fine, but I did chase it several times before eventually getting someone willing/with the power to override whatever was making it take weeks to refund after having shown as delivered to their facility. I still think even that experience was better than I get elsewhere, and certainly on the whole it is, that was my worst ever, and it was fine in the end.)