I am trying to block certain phone numbers but when I go to settings I can't see the CALL+SMS option. What should I do? Is there any other way?

I am using a Lumia 520.

  • provide the OS version
    – Ravimallya
    Jul 15 '16 at 6:50
  • 1
    @Ravimallya The tag 8.1 means that the phone is running Windows phone 8.1. The option remained the same in all minor versions of 8.1. What is the use of asking addtional details if there is no use for it.
    – Kolappan N
    Jul 18 '16 at 14:41