Unwanted phone call

As I was typing my last post my cell begins to ring. Turning to stare at the screen I see a number I haven't seen in a very long time. I pick it up only to hear a familiar voice sound through.
"Hello? Maria João?"
My heart sank to my feet, my hands balling into fists. Through clenched teeth I tried to make my trembeling voice as polite as possible.
"No. You've got the wrong number."
"Oh, sorry. Must have typed it wrong. Bye."
Even though the call had ended I still held the phone to my ear. How is this possible? How can anyone be that way? Not a single word for three entire months just to call me and say it was a mistake...

Is that all I am to him?