What is the ruling on imitating jinn by creating social media accounts and claiming knowledge of the unseen, and what is the ruling on mockery when being advised?

Claiming knowledge of people's circumstances and opening accounts for them, alleging to be from the jinn, is a reprehensible act that requires repentance for several reasons: it is impermissible to imitate the jinn, lying even in jest is forbidden except for what the Sharia (definition) has exempted, claiming knowledge of the unseen—even in jest—is impermissible, and terrifying Muslims by revealing their personal information is forbidden and corrupts belief, in addition to wasting time on such absurdities.