The self service machines were fully shut down due the technical problems, I asked the Assistant what happen the self service machines as there was only two assistants at the counter, she weren’t know to what happen the machines ! I had another day shopping at the foodhall there was a customer there times struggling the use service machines as it’s not works completely, when I weight the item in scan the machines is said 3 times weight item on the scanner then Retail Assistant act weirdly and failing customer service principles after paid the items £20 coast took the receipt and forget to take change £5.60 and M&S Assistant is not bring the change behind me. I can’t believe that how M&S can have poor quality customer services and terrible machines !