GuruScript needs fixing

I have recently purchased Guruscript Money, i have been scammed and the script itself has many errors, i have all of the above skills and just simply do not have the time to fix these issues. it is a crowdfunding site that as far as i can tell all the files needed are there only they are not linking and working correctly on core functions like emailing the manager when donations are placed, it also has the [login to view URL] files in place only no working withdraw facility on the backend, all passwords will be provided and access to our servers. Guruscript has the facility to pay them to fix it but im not spending any more money with them. I need a genuine quote, and will provide access beforehand if you need it to quote properly. and this needs to be actioned and working ASAP as my client is waiting for their script. there are a few little issues i may also ask also to be done should someone get this working Regards Steven