Earlier quoted context omitted.
Fraud in debt collection is rampant. Yes, there are legitimate debtors, but you can't assume than some one who is being sued legitimately owes the debt. Even without fraud, many debt collectors illegally harass the debtors, knowing they can't afford a lawyer to defend themselves.
AFAIK harassment in most states is very illegal now and is a great way to get your debt dismissed. The same goes for fraud in debt collection. As I mentioned in previous comments, tactics like sewer service by debt collectors are a great way to get your debt dismissed. Many people with lapsed unsecured debt know they owe that money, they simply prefer to pretend the debt will go away if they ignore it. If they don't…
I guess my point is that the legal protections against harassment do exist but are not effective. It's not even my debt and I have a master's degree and generous income and I ended up changing my phone number in order to stop multiple calls per day. So to whoever ends up getting that number assigned, sorry about Esteban's $8k in back tuition and good luck.
The irony is that my new phone number also gets calls from debt collectors, but far less often. It seems the debt was either smaller or sold into a less predatory corner of the industry.