McDonald’s complaint: App Failure or Operator Error

I use the app to order hot drinks every day during the week and have no problems when visiting Highlands in Worksop but a different story at Retford’s Markham Moor. Drinks are ordered before leaving for work, payment details given and an app reference received. On arrival I chose the drive through, completed payment and received an enlarged app reference which was given to the operator via microphone. They ed the order and I proceeded to the collection window glancing at the display at the payment window to ensure the order was correct where I was then told that the payment hadn’t gone through and I now have to go to the back of the queue to pay manually. This has happened twice in recent months at the same retailer turning a quick stop into a 20-25 minute slog throwing the days timetable out of sync. Total nightmare for a couple of coffees. Emailed Nicole and later Tim at customer services and received the ‘brush off’ suggesting I reinstall the app or it is local conditions ( within the Markham Triangle)