Why did Milk & More cancel my delivery for no reason?

It claimed there were problems with my credit card, but there was nothing wrongIt looks as though Milk & More (the milk delivery service) is up to its old tricks. It recently switched from collecting payments one month in arrears, to one week in advance. Overnight, I received a message saying it had “attempted to take your weekly payment on three occasions but unfortunately have been unable to. Your regular deliveries for this week, commencing Monday, 3 September, have been cancelled.