Call her back, tell her how much you hate her and want her out of your life. You may think she isn't even worth talking to, but it might work and then she might just stop talking to you all together. Once you've done that, wait a few days and if she calls again give her number to Sammie. (Yes, I'm being serious!) After this, change your number even if she doesn't call again (she might later in life) and tell all your friends/family not to give out your number to any crazy stalkerish ex's or people in general without your permission.