Blocked this one as well. They change their number weekly. Regarding the question on blocking numbers in a cell phone, on Apple you can just select Block This Caller. On others where you may be limited by your carrier, try this:  Create a contact and name it something like "Ignore" or "Block". Set the ringtone of the contact to "silent". When you receive a phone call that you want to ignore or block, save that to the contact you created.  Then if you receive a call from that number, it is ignored. Your phone doesn't ring nor will it show a missed call. Problem solved without having to pay the carrier fee for blocking calls. It's built in to the iPhone already so there are no fees for blocking on them.