You Can Block Calls and Messages
For quite some time you couldn’t block calls through iOS, allowing annoying people to bother you unless you could get your carrier to handle the task. Harassment sucks in any form, and we’re very happy to see Apple taking measures to stop it. If you want to block someone from sending you a call or message, you just need to hop into Settings -> Phone and/or Settings -> Messages and find the Blocked section toward the bottom. Tap it and add any people you don’t want. You can always remove them if you change your mind.