In this article you can find the steps that allows you to block anyone that is disturbing you with calls and texts.watcj the video or Just follow this steps:
1-Open Viber. Navigate to your phone’s home screen and locate the Viber application. The icon shows a white telephone on a purple background. Tap on this icon to launch the app.
2-Open the app’s menu. Do this by tapping on the Menu button located on the lower-right hand corner of the screen.
4-Open the privacy settings. This is done by tapping “Privacy” on the Settings screen.
5-Tap on “Block List.”
6-Add a number to the Block List. To do this, tap on “Add Number” on the bottom part of the screen and type in the number you want to block. Tap on the “Block” button once you are through. The mobile number will now appear under the Block List.