@seitaninstrument
Please share your contact information so we can get in touch, I might be able to assist you.
What I did was request my hosting provider to scan all my files. Then, using a finder code, I attempted to locate Base64 or other suspicious code that I found in my infected files. After locating them, I deleted them and changed all my login credentials. I can share these finder files for bulk deletion.
I understand the difficulty you’re facing; I went through a similar experience a year ago, which almost cost me my job. Fortunately, I was able to overcome it. I also implemented SiteLock security for one of my dedicated clients, and it resolved their issues within 24 hours. You might want to consider trying this solution.