How to block people from texting you on a samsung genio?

I have a samsung genio and want to stop someone texting me. How do I do that without contacting customer services?How to block people from texting you on a samsung genio?That is truly an excellent question! Unfortunately, I am not entirely sure of the answer, so therefore I wish you the very best of luck in finding it! Hopefully, there will be someone who knows this! Once again, good luck!How to block people from texting you on a samsung genio?change your sim card