Jeez - what a slip-up! Considering the volume of stuff pinging around I'm surprised it all works as well as it does - modern Logistics is mind-blowing ...
I've bailed on Argos personally, no confidence it'd happen. My order on Weds never moved from "Sit Tight!" (equivalent to Apple 'Preparing for Despatch') whilst they were adamant it'd be out today as late as 0900 this morning. They did however do an instant credit back to my PayPal whilst I was on Live Chat with them, so that's something positive ...
John Lewis have now come up trumps for a Waitrose store collection tomorrow. Confirmation said collect from 4PM & the order status page now says 2PM so looking better now.