WP script check and maybe fix broken links

Some A-hole in India named Riddhi Sen of Panthersway Technology was responsible for doing some "improvements" such as onsite SEO and 301 redirect (from other urls I own) to my Wordpress site and because of his incompetence my site crashed, and he then denied adding the 301 redirect script. Have a look at a sample piece of the html script: RewriteRule /?$ "http\:\/\/www\.winterwoodworks\.com" [R=301,L] Are backslashes used in this way? According to tech at Godaddy it is not correct and caused an "incident circle", sometime after the site checks out in "preview dns". I have an old copy of [login to view URL] that is live now (dns pointing) and need someone familiar with Wordpress to look over the code of the copy on the [login to view URL] server and use their "hosting control center" to test. I tried to work this out with Panthersway and all I can say is Riddhi seems only interested in helping people up to the point of when he takes your money, then if you have a problem he will reply days later and say he was "travelling"... LOL.