Unfortunately there is nothing you can do about the situation and there is no way you can stop it.
Here is what I do on unknown numbers
1) check on this site and be sure others are getting the calls and you can establish it is a SKAM
2) PROGRAM the number in your address book as SKAM
3) NEXT time you get a call and it comes up SKAM,
answer the call and begin punching random numbers ##67**#365h87l0j28bne76.....and continue until the line disconnects.
4_ This will do nothing,,,,,,except you will feel better.It's kinda like going into a padded closet and screaming. Great release.
Second call form this number in less than two weeks. Pressed "1" the first time as well as today. I'm still curious as to how they were able to call my cell.
I just got a call from this number. I don't answer phone calls on my cell phone that I do not recognize. Also, if you do answer,NEVER EVER, press 1 for this or that!!!!