Credit card activation

I fail to see the purpose of calling a 800 number to activate a credit card other than getting customers to listen to sales pitches. Do these credit card people not send enough crap with my statement to throw away? Do they not call my required given phone number to telemarket to my answering machine? Do they not send enough junk emails to delete? Once I heard my card was activated, I hung up during the automated sales pitch. Usually I get an operator I have to say No, No, No, No, Because I don't want it, No, No, No, and I just want my card activiated. Sometimes I hate credit cards. Post later. Bye!