Sainsbury's and Waitrose have been forced to cancel their online ordering service on the eve of Christmas because of computer failure.
Sainsbury's accidentally axed hundreds which already been made last night (December 21) because of a computer failure.
Some customers were offered redelivery dates - but only after Christmas.
And a failure on Waitrose's website, which workers reportedly told customers had resulted in the site "going into meltdown", also led to a series of failed deliveries last night and todaty (December 22).
Customers are now being told to travel to the store if they want to collect their order.
Sainsbury's says its website is now working as normal, while a spokesman for Waitrose told The Guardian it's deliveries would be fulfilled.
"The temporary IT problem yesterday was swiftly and successfully fixed," a spokesman said.
"We have been in touch with any customers who might have a slight delay to their order to apologise and to arrange a delivery time to suit them."