In my article "Getting down and dirty: Astrology and love spells" from Asteria 2, I talk about people who seek occult services to fulfill their romantic desires. In that article I briefly address cases where such people end up being threatened by the alleged occultist, often times the latter demanding more money "or else"! Of course, that "or else" means curses and the clients in these cases often freak out and comply. I've heard of more than a few cases in my country of people who experienced such a thing at the hands of allegedly gifted, highly skilled and talented, super powerful (you get the idea) occultists. Some cases also made headlines because public figures apparently experienced similar scenarios. And I've also heard of it happening throughout the world once I got involved in the occult.
While I see nothing wrong with people seeking such services for whatever purpose, the fact of the matter is their idea of the occult is often crafted based on misconceptions induced by the entertainment industry, what they've been told by their parents, grandparents or others, as well as a primal fear of the unknown - the twelfth house covers both curses and the unknown and I wrote an article on that too in Asteria 2. It is therefore understandable when people easily become frightened by such threats and comply to the demands of the alleged occultist. But that's not all. People's expectations in regards to magical success are often twisted, most likely because of the same aforementioned causes.