HOW TO STOP A BAR NUMBER FROM CALLING YOU
this is a very simple tweak that can help you to make your caller not to reach you while calling.
when the person call or flash you for the first time, all you need to do is to type this number:**21*174 followed by the last seven digits of your phone number and #.
Example:-**21*1740423872#.
to cancel dial ##21# and send>
NOTE::IT WILL CHARGE THE CALLER #30 INSTANTLY AND THAT WILL TEACH HIM A LESSON