What To Do When Your Dad is Vexing With you?

This is for real. My dad has not spoken to me since the 11th of May 2009. To be honest I have not tried to call. Me, too, I am upset. But I have extended the olive branch via sms messages which till date have been ignored. At least, I did not get any replies. DNW wonders what to do when Papas are cold warring you.....