Everyday I receive a recorded message from a debt collector asking me to call them back. I don't believe I have been delinquent on a debt so I've tried to call them back a few times. Every time I call and ask what the debt is for they keep asking me personal information that I'm not interested in giving them. They will not answer what they are trying to collect and always end up hanging up on me. They are nasty, disgusting, people and I want them to stop bothering me. If I owe money I would like to straighten it out. What are my rights?