phone calls

I have been receiving phone calls for at least a year.  At first I just hung up.  Sometimes there is an option to press a number to have your number taken off their list.  This never worked.  Then I tried pressing 1 to speak to a rep.  I have asked them to take my number off and I also asked to speak to a supervisor.  The minute I say anything that indicates I do not want their service they hang up on me.  Since it seems that I can't stop these phone calls I have decided to make their life as miserable as mine.  Now when I get these calls I press 1 to get a rep on the line and as soon as they come on the line I blow a whistle right into the receiver and hang up.  It doesn't stop the calls but it makes me feel better.