"We have forwarded your feedback to the appropriate team. Someone from that team will investigate and follow up as needed with the developer.
Because we can only share communications about an app with its developer, you will not receive updates about this matter."
It's the perfect email, they can do whatever they want, and they have an excuse why they don't need to account for it - they could let the app do whatever it want, demand it to change it's behavior or throw it out, but the one who spent considerable time researching this would never know.