Worst app ever! Configured to only let contacts through. Robokiller sent every call, including all of my contacts to Robokiller voicemail. Then did not allow enough time to leave a message. No calls would ring on my phone, just go to voicemail. Contacted help desk, solution, delete app then reinstall. I only installed it two days ago. $35/Year for an app that not only doesn't work but causes me to miss calls. My spams reduced as nothing was let through, even wanted calls. Refund my money please!