Stoogle
I tried in vain for over 8 months to report an "antivirus" app that was tricking users into installing their app through the use of fake virus warnings that were served up through hijacked Facebook links every single day for over 2 years straight and got absolutely NOWHERE!
The app in question is using the Facebook Graph API to access a users Facebook account and the advertising SDK would use the "showSource" command to view a webpages HTML source and inject javascript that made the users phone vibrate with a full screen warning designed to appear as an internal warning from Google that your device was "infected" and linked to the app on the Google play Store.
The relatively unknown app developer only has two apps, an "antivirus" app and a battery saving app yet it's company is now valued at well over $200 Million US.
I took over 200 screenshots of users complaining about the fake virus warnings on the Play store reviews and forwarded them all to multiple Google reps and supervisors and nothing was ever done about it.