Samsung Galaxy Note allows you to block calls from a specific telephone number.
Block unwanted calls. Blocking a phone number from calling you
Automatically Block Calls From Specific Numbers
Step Blocking a phone number from calling you
1. From the Phone app, press the setting button.
2. Select My device.
2. Select Call settings.
3. Select Call rejection.
4. Slide the Auto reject mode setting to the right.
5. Select Create.
6. Type the phone number you would like to block.
7. Select Save.
Done! Now all calls from that phone number will be automatically rejected by your Galaxy Note.