Costruire Siti Web

Hi Guys, what i need it's a simple job. basically a stupid webmaster on freelancer did a stupid work on my website (joomla) he started last april, until now. But what he did was just brake down my website. Basically my website was much better before his operations, cause is not working at all. What i need in this project is re-establish my website in the same way, before his operations in april (as upload backup). After fixed this. i can talk with the winner webmaster about a new project.