There's a very good Brazilian series "Desejos S.A."—literally "Wishes Ltd" but translated into English as "Whatever, whenever". People call a mysterious phone number, voicemail prompt tells them "At the tone, speak your wish clearly", then they get no further feedback and hang up. Shortly after, their wish comes true... and they have to do one task (always incomprehensible to them, often reprehensible) so that someone else gets their wish.