You ask me questions then you just hang up!

I used to have a contract line with you which I closed in December. Today someone from you calls me and asks for my ID number, email address and alternative number. As soon as I give her she hangs up! I don't like your attitude. If you had something to ask me or talk about concerning my old contract then come out with it, don't play these guerrilla hide and seek tactics with me! Sies!