I don't blame you for being annoyed with this seller on this ocassion - I also think saying beware is fair and don't feel you were 'shouting not to trust this seller'.
It is irritating when they say they are out of stock but the site is still showing that item is for sale, as I'm sure you would rather have the paper than the refund you got. Sadly they aren't the only people to do this and it happens even when there is no public holiday limiting the number of days being worked.

Jan