People have been doing this for at least a decade and a half. There's one particularly notorious one that always used to refuse to tell you how you got on thei

People have been doing this for at least a decade and a half. There's one particularly notorious one that always used to refuse to tell you how you got on their blacklist, and refused to remove you from their list without you paying them money. They used to be popular enough that being on their list was a pain in the neck. It's extortion, plain and simple.