The article content provided does not contain the actual story about the Kmart mess incident referenced in the headline. Instead, the text supplied consists solely of Daily Mail website navigation, unrelated headline links and menu items, meaning no substantive details about the reported customer complaints, the specific Kmart store involved, or the nature of the "unacceptable mess" are available to summarise.

As a result, key facts such as the store location, what customers found objectionable, any official response from Kmart, or quotes from those involved cannot be confirmed from the material given. A proper summary would require the full body text of the original article to accurately convey what happened and why it was considered newsworthy.