Why is he calling me?

I ended this fwb thing in an email because I knew if I actually talked to him he'd convince me not to likes hes done before. I was really nice and just told him it wasn't working out anymore. I told him I felt like he was just using me for and now I want a relationship and not just . I told him that he's a great guy and I wish him the best in life. Then he sent me this email cussing @ me and giving me all these excuses like the reason he wasn't calling me back was because he lost his phone, and that he hadn't treated me like a call, when he most defiantly has. He called me later that say twice then once this morning. I've ignored all the calls. Why would he even bother calling me after being such an @$$hole? Do you think hes going to keep calling me?