Calling a psychic hotline: what's the catch / consequences?

I do not believe in the supernatural powers of psychics, especially those over the phone that advertise on late night T.V. Even if they are total cons, I am interested in what they might have to say.

I suppose that some readers of Fluther might consider trying one in fun, or to get a perspective from someone who is highly intuitive or good at reading people—enough to convince them of their talent and guidance. Can’t hurt—and maybe a true new perspective on one’s self might be revealed—or advise for one’s problems even if its a hoax.

But what are the consequences of calling one of those hotlines? Are there billing scams? Fraud? Coersion to pay more and more for more information? mind control?

I am looking for true answers about if it is a scam and there are billing issues—anything you KNOW about or can speculate what might happen if I call a psychic for a dollar a minute. What are the consequences ?