Hello , I accidentally made a duplicate order due to a glitchy browser on my phone which caused an £850 order to become a £1700 order . Thankfully my bank won't process the order unless I have enough money which is why I need to cancel the duplicate order so I can actually pay for my laptop. There is no Manage account button or any button that says Cancel on the My Account page and the lines are closed on a Sunday . Please HELP !!!!!