Argh! I phoned and cancelled the Argos order ages ago, and now they are sending me messages that it'll be delivered next week!
Their website is currently too busy for me to get access to and I cba with phoning them up again to be put on hold for an hour, and then get through to someone to be told I'm through to the wrong department even though I called the number it states on the website and selected the correct options when prompted, and then put on hold for another half hour!
Just filled out their form online to cancel and will refuse delivery if it is attempted.