Two months ago, i hired an seo expert to rank my sites in google, then i realize he put hidden adult links on my pages, i stopped work with him he threaten me to remove all my pages indexed in google, i dont' believe he can do it, but couple of days later, he did that.. i dont know how he did it until today i found robots.txt was modified below: User-agent: * Disallow: / is this why google blocked all my pages? if it is the site has been not indexed by google for almost two months, how long google will start to index my sites again? please help. thank you.