Questions to be asked before hiring an SEO company?

So here is the revised list again:


1. What reputation does the company hold in the market?
2. What guarantee is being given by the company?
3. How is the company's website doing?
4. Can I have a few reference checks of the company?
5. Can I have a view of a few examples of the company's works?
6. Does the company know recent changes in Search Engine algorithm?
7. Can I know more about the company's content writers?
8. What are the tools does the company use?
9. Why should I hire the company?
10. Can I have a view of examples of the company's tracking reports?
11. What are the Linkedin profiles of the people who own the company?
12. Who would actually be handling my account from the company? I would like to know their history and linkedin profiles too.
13. For how long has the company been in the current location?
14. Can I know the company's staff turnover?
15. Can I know the company's training protocols so that no issues are faced related to the same?
16. How has the company responded to the increasing sophistication of search engines and the websites indexed by the same?

Let me know if anyone of you want to add more points here.