The problem however lies in the SEO company you will hire.
It is better to decline than giving unsatisfactory returns. You should ask for references and testimonials their own past persons. Now, let me share with you some things to find the top company which will deliver latest results for you. https://www.youtube.com/playlist?list=PLbZg6jL4FgfAS0TjMKfQ3hKiYOikfzmuE