It was bad enough when they called your home phone. Now they call your cell phone! Even if you've added your number to the Do Not Call list, you still get those robo-calls.
But fear not -- there's an app for that! Actually there are three.
One is called Privacy Star. It lets you block specific numbers, even groups of numbers so you could block an entire area code -- or all unknown numbers.
It also has something called smart block. It takes data from other app users to automatically block the numbers that most users complain about. And it's not just phone calls -- you can also block those unwanted spam text messages.
The app is free for Android, Apple and Blackberry devices.
Next up is Mr. Number. It has a lot of the same features as Privacy Star, but this one is just for Android phones. It can also send any calls straight to voicemail and you can check out what numbers other users are blocking -- and block them too!
Finally there's Calls Blacklist, which is also free for Android phones. All the calls and texts that the app blocks are saved, just in case the wrong number ends up getting blocked.