By Tim Hanlon A “vast majority” of online Sainsbury’s customers will be left without their orders due to a “technical issue”. The supermarket giant has informed people on social media of the problem as shoppers have also claimed they have been struggling to pay at tills – and others have said stores are closed. Sainsbury’s has said that many online orders are being affected by the glitch and it will contact customers with the issue likely to cause a problem for the rest of the day. The supermarket stated that it was “working hard to fix the issue” and also apologised to customers. People will …