how to get traffic to premium rate phone number ?

[Trial]

Hi there, I am really interested about premium rate phone service.But I don't have too much idea about how to generate traffic. I made only few bucks last 7 days using my own knowledge.Anybody there who have experience about how to generate traffic to premium rate phone number ?
White hat and black hat both methods are appreciated.

Thank you very much.

[Lesus]

Provide a service that is worth the cost, something that people can't get elsewhere for free.