Who says that the SEO is the closed chapter? Just hire a proper and experienced SEO Company Kolkata, Delhi, Bangalore, Chennai or wherever you are, and I am sure you can get the Pr for your company in no time.
It is true that with the introduction of Google Instant in September 2010, we were all in the thought it is the end of SEO. Steve Rubel commented that Google Instant mean “no two users will see the same Web. Once a single search would do the trick and everyone saw the same results. That's what made search engine optimization work.
It is just to mention over here, that there exist nothing like this. When one door gets close, several other doors will get opened. This is true that the site is going to drop one type of the organic traffic, but if you go for a look for the other fields, I am sure, you are going to get other ways to increase your traffic.
Just remember one thing that your site must rank 1 in the search engine. Options opened for you are site optimization, link buildings, promotion with the help of the social media etc.