Try searching for "SEO company [your city]" or "SEO company [your industry]".
You should find a company that has at least 3 regarding experience in SEO trade. Some of them will say just about everything to get you to be a a customer. In the end, black hat SEO techniques will only get much more . https://www.youtube.com/watch?v=0hFwN1soazQ&feature=youtu.be%22