Tesco shoppers have been warned about a new glitch that affects those using Apple Pay at the checkout.
The Clubcard is a loyalty card available to Tesco customers that ordinarily grants them significant discounts - and even rewards - by scanning the card when they pay for their shopping.
However, shoppers using Apple's mobile payment service have been reporting that their savings are not being registered.
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This is because, due to a fault in the system, the Clubcard points that they should be receiving are not being added to their account, according to reports from The Times.
As reported by Northants Live, many of these customers have been quick to share their frustration with the supermarket chain.
One fumed: "Paid for a shop today with my credit card/Clubcard via Apple Pay and seems you can't link the Clubcard prices to the credit card/Clubcard meaning you lose out on the Clubcard prices."
Another tweeted: "Can you explain why Clubcard points are no longer collected when payment is made via Apple Pay?"
"There is no error on the phone, the tills just don’t recognise the Clubcard and then also using ApplePay doesn’t event recognise any card when hovering over reader," fumed a third.
Another was furious, claiming that the Clubcard on Apple Pay was "not recognised" and that they had to "walk away with no points".
However, Tesco has claimed that they are able to correct the mistake.
Tesco said: “Information regarding Apple Pay is in the welcome booklet, as well as on our website and online community pages.
"If a customer does not receive their full allocation of points and discounts we can correct this.”