Am I asking for too much??

I’m going to try to make this short. But my child’s fathers ex girlfriend has been a big problem. She has contacted him since January and has done so nonstop. He’s not innocent either. He has been caught having small talk with her. It has been so much bs with this girl. She has sent naked pictures to his Instagram page and has just overall reached out. This has been going on nonstop for almost a year. I’m tired! I finally asked him to block her from all ways of contacting him. He initially put up a fight as to why he won’t. In his exact words “I don’t care about her contacting me because I don’t pay attention to it. So why block it”? That made no sense to me! If it’s making your partner feel uncomfortable and putting your relationship at risk, why not block it? Furthermore, if you aren’t paying something any attention, her naked pictures on Instagram wouldn’t have been opened. When I don’t pay someone any mind, I’m not opening messages or anything else. I’m so over it! Was I asking for too much for him to block her???? He claims he has since then but why did I have to beg for him to do it ya know??? I constantly have to ask him to put his foot down and tell her to stop calling because he’s involved with someone else. He claims he has. I highly doubt it! In fact, I’m 100% sure he didn’t.