How can you complain without knowing what service is being advertised?
I followed the link. It's a company which assists people in obtaining fiance or marriage visas. Their service is for customers (US citizens) who have a wife or fiance who lives in the Philippines and who want help starting a life in the United States.
I have no idea who many, if any, members of Flyertalk have need of their services. I don't know of any. However the service has nothing to do with human trafficking. There is absolutely no indication the service is anything but legal.