How do you block calls for Sanyo incognito?

There is no exact Block Calls button in the Sanyo Incognito

So to make it easier, set a tone for Private / Unknown Callers:

1) If you highlight the home button & click it you will then go to- Settings / Tools

2) Click on settings the Ringtones

3) Now click Incoming Calls

4) Private/ Unknown

5) then Click Preloaded Ringtones

6) Select any ringtone you want for the Private/ Unknown callers. (This will let you know someone is calling you don't know or they are messing with you).