Believe it or not, the law gives you the right to be treated with truth, fairness, dignity, and respect - even if you owe a debt!
Remember, these collectors aren't your neighbor who is irritated that you haven't returned the lawmower - they're paid professionals wading through thousands of calls everyday just trying to push the right emotional buttons that will get their company paid. They don't even know you! They didn't even dial your number - a computer did it!
So, if something gets said that gets your hair standing up, you may well have a case that entitles you to compensation and perhaps even elimination of your debt! Keep a log of who said what and when and record those nasty calls in accordance with State's call-recording laws (does the recorded message come on every time saying "this call may be recorded for quality assurance?"), and then request a Free Case Evaluation.
Don't put up with it.