Yep, same thing happened to me.  I told him if he was going to record the conversation for quality control, so was I.  He said “You can’t, it’s Pennsylvania law”.  I said “I can with your consent, and if you record it, I’m recording it”.  He got so mad.  He started telling me I didn’t know the law.  Then the Knuckle Head began to try insults.  I gave him a little gerbil voodoo and hung up.  I filed a police report and called back the number.  The same guy answered and I explained the police report and that Comcast was notified to log the call for potential criminal proceedings.  By the way, did I mention I’m not the person he was looking for?  Nor have I ever heard of the guy.   I did state this numerous times at the beginning of our first conversation, but he didn’t want to hear it.  Guess the guy gets off on harassing people.  I’m sure it’s a result of something a crazy uncle did to him during a baby sit.  As it turns out, if you don’t owe them money, just tell them, “It’s not me and that person doesn’t live here and please quit calling”.   Upon my return call to tell the ignorant underachiever, I reiterated, “That’s not me and do not call here anymore”.  He sounded kind of spooked and apologized and said it wouldn’t happen again.  The reason I’m posting this is I just moved into a new house 10 months ago.  Apparently the poor [***] that had my phone number before I opened this new account didn’t pay his bills.  Now I’m paying for it every week with a new call from a bill collector with an inaccurate phone number.

I got calls from the same person, I think I got his name as Ed Thomas, works for Commonwealth Financial.
I told him to quit calling my number because the person he wanted was not associated with that number.  He got a little nasty and hung up.  I called him back several times and he got really ticked, threatened to put a black mark on my credit.  I filed a complaint with his corporate and am proceeding to file a complaint with the Pennsyvania Attorney General.
The guy is a real [***].

They had me paying on a credit card bill but can't or  can't prove it - so I quit. It's NCC and even the attorney general office told me to sue them. Who has that kind of money, they can sue me. Watch them they will curse you, threaten to come and "get" you as well as put your a__ __ in jail. All illegal but they get away with it - file with the Pa. Attorney General office http://www.attorneygeneral.gov/ Maybe we can close them down. The jerks.. Also definelty record all calls.

Automated message left on my machine.  It seems to be a collection agency for someone who has never lived here.  We've had our phone number for over 10 years, so they're not likely looking for the last person with our number.

The number  724 765 0839 continually call me at all hours. i have answered twice with no reply. A lot of time it is late at night or Sunday evenings