You can automatically reject unwanted calls by using this call blocker app.
if you want to reject of block calls of a person who is annoying you and
making call you frequently so just add this person in blacklist and block
his calling.This call blocker app is free and it will use your resources
lightly.
Just make the list of people of whom you want block their calling
and the list of people of whom you do not want to block their calls and
apply changes.That's it.
Now this call Blocker will work for you and will block and unblock the
calls according to you choice.

Features-:
1.Light weight takes less memory.
2.Less Use of your resources.
3.Blocked numbers log records.
4.No subscription.
5.User friendly.