A simple and effective SMS filter and call blocker application. It allows you to block SMS and calls from any number that you store in the app's database. Once those numbers has been set up, you will not be notified of any of these SMSes or calls. At the end of the day, you can review all the messages and delete all of them at once.
At any time, you can edit the list of blocked numbers. You will never be interrupted by unwanted calls or SMS again.