Woe betide anyone who dares to question "psychic" Sally Morgan's ability to communicate with the dead. If you do, it seems you won't just get the spirit world on your back - you'll get a sustained barrage of menacing threats and homophobic abuse from Morgan's husband/manager. Campaigner Mark Tilbrook recounts his experience here, and footage of the encounter can be viewed here.
In response, Sally Morgan Enterprises (!) has claimed that John Morgan's behaviour was "out of character" and that she "can only assume that this was the cause of persistent hounding that lead to this altercation". That'd be the sound of shovels frantically trying to dig a way out of a big hole.