I am always being asked how to stop someone from calling you on your iPhone. Unfortunately using the 'Blocked' feature on your iPhone doesn't always work. You can block a number from calling you, but if they call you on 'Private' where they block their I. D. they can still get through.
So, I thought I would share with everyone another way of permanently stopping a particular person/number from calling you.
Select 'Favourites' (star icon) and add only the people you want to contact you from your contacts (+ sign on the top right to add contacts).
Once you have added your desired contacts, go into 'Settings' click on 'Do Not Disturb' (half moon icon). You will see at the very top that it says 'Manual' that should be off (not green), 'Scheduled' just below should be off. Click on 'Allow Calls From' and select 'Favourites.' 'Repeated Calls' needs to be switched off if it's green and under 'Silence' select Always.
Anyone that is not in your favourites while 'Do Not Disturb' is turned on, will not get through, they will be diverted to your voicemail instead ;)
Most Helpful Guy