What the Hell?

Mysterious Ex called me today, 5 times. I didn't answer the phone, (I was here twice when he called), I just looked at the phone. I sent a letter a while back but, it wasn't a please call me, we need to talk letter it was just an, "end of the year get you out of my system so I can move on with my life" kind of letter. I don't want to speak to him. Why is he calling me? I don't think I even want to know why.