Suspected Spam Activity/Users
I'm surprised I couldn't find any immediate results (or rather any results) among the forums for any other people's problems with this matter. I doubt I'm the only one, or maybe Musescore is just a relatively clean corner of the internet.
Regardless, I already detailed everything in an email to support, but I've heard they're notoriously unreliable. So, I've taken to the forums in an attempt to bring it to people's attention in hopes of saving a few souls who aren't particularly familiar with spam red flags.