When I signed up for Spotify awhile ago, I created several different accounts (pretty sure I made 3-4 with different emails for each one..I don't know why). Recently I upgraded one of my accounts to premium, but I'm being charge twice as much. I've tried going through my accounts to see the other one that is being charged, but I can't find anything. Is there a way to fix this problem? I really don't want to be charged an extra $10 a month for an account that I don't use.