Internal 500 Error, website has collapsed

Hey Guys,

I run a radio show’s website known as Yfactor876.com. Recently our server was hacked into, and someone has renamed our “index.php” to inde55x.php” which has collapsed the site.

I was able to detect the error and replace back the file to “index.php”. However, as soon as I did so. The site has still been showing a collapse.

The theme no longer exists. All I see is everything over each other and when I select a page.

A message, that says “500 Internal Server Error” pops up.

Please I’m looking for valuable advice, and a quick fix hopefully.

Thank you in advance, your help is needed.