I agree this is a scam and I call a fraud attorney online. He told me to keep all numbers and message left by these person and take them to law enforcement and let them take care of it. THis is stupid. If someone is not answering the phone why do they keep calling.

Justin Brown called form teh following number 773-741-7498

its a scam and they call from this otha numbers  too 773-741-7498 and 610-427-5017

I have been receiving calls from them as well....it is a scam.   Just tell the you have reported them and they will hang up.  They harrassed me so much....I started harrassing them back.

A phony debt collector identifies himself as Officer Justin Brown.  The same name several other people have reported.  However, he refuses to provide a street address, always stops at 348 and I can't understand the physical street name due to his thick Nigerian accent, many describe it as a middle eastern or eastern Indian accent.  I'm guessing Nigerian.  Upon asking him to kindly spell the street name, he gets hostile and threatening.  He does say he is calling from California, yet always stops short of giving me a city.  The number he calls from is 909-451-0941.  If you call this number back you get an automated message that all callers are busy on another call, and asked to please leave a message.  I believe it is doubtful that this is the actual number they are calling from.  This person identifying himself as Justin Brown calls repetitively throughout the work day, at a business number and is totally non-compliant with regard to Federal Debt Collection regulations.  I too believe this is a scam operation, buying their data from unscrupulous pay day loan companies.  Buyer beware if you choose to deal with any PayDay Loan Companies.  I called our local police department, will get a police report number, with this information I will call my phone provider and block their calls.  Perhaps they have multiple numbers that they are calling from, so I'm hoping this works