> the app is clearly pretending to be my app

OK.

> when it isn’t

Isn’t that what Apple must check and may be doing by “All they seem to have done so far is forward my complaint to the author of the scam listing” (depending on how they worded that)?

Also, all you formally complained about is a trademark infringement. Global trademark law is complex. Maybe somebody else managed to get a trademark with the same name, too? I guess that’s unlikely, but Apple can’t assume that.