How to contact reviewers of competitor app on Playstore?

Have you ever thought of contacting a reviewer of your competitor app? Especially those that seem to be dissatisfied with an app that is similar to your app, it would make total sense to message them asking them to check out your own app which may be a better solution for them.

So when looking up reviews of an app on the Playstore, I can see the image of the reviewer, their name and their review. you click on the name and can see their Google+ profile. But there is no way to contact them.

Anyone know of a sneaky way to reach people through their Google+ profile?

This is my app- Suno Khabar - India News in Audio