I'm looking at signing up with starnow but don't 100% understand the membership terms and conditions. It says 'cancel anytime' but I know there will be a catch somewhere. If I sign up for a 6 month contract and cancel at 5 and a half months what happens? So in other words, at what point in the 6 months do I need to cancel to ensure that I don't get charged for another 6 months?