Block text and call on iPhone 4?

Good afternoon! I have and iPhone 4 and I need to block a number from calling and texting me! I have Verizon and don't know how to do it… I need a free and quick way to do this and if it possible to do it from my computer that would be better! Thank you everyone!

Depends on the network youre with they have different ways of operating

Call your carrier they can do it