All orders placed for Saturday will now be cancelled and the supermarket said payment would not be taken from cards, the company said on X.
Sainsbury’s has also advised shoppers to place new orders on Monday, but has not spoken to refunds or re-deliveries.
Pimlico Sainsbury’s had yellow warning tape around the SmartShop stall on Saturday morning.
A note stuck to the tape told staff the store was cash payment only.
It read: “We apologise, we’re currently unable to accept contactless or card payments.
“We’re working to resolve this issue.
“Please pay using cash. Thank you.”