After delaying her Unbreakable tour to have surgery, Janet Jackson has allegedly canceled all the European and U.K. dates of her enormous world tour only a few weeks ahead of the start. According to reports, ticketholders got an email on Tuesday that said: "It is not possible to confirm a new date at the present time, so we are refunding all ticket holders. You don?t need to do a thing ? you?ll see a credit onto the card you used within 15 days.