For a while I had a spammer sending me iMessages around 8am, I know that since iOS 7 I can now block people from texting/calling me and for a while this is what I was doing with this spammer (though he would eventually just message me from a new email address).
About 2 months ago I got a message once again around 8am, I was getting ready for work and rather than block it I just swiped and delete the message, then the next day same thing, on the 3rd day he messaged me and it happen to be my day off. I received the message on my Mac and I was rather annoyed so I googled "Gay Porn" images and saved about 20 pictures, then using copy and paste I sent well over 100 text images (20 pictures each time) of gay porn from my Mac to that guy.
Two months later not a single spam from that person.
The spam was a sale on sunglasses and a bunch of accessories.