I, too, received a letter yesterday saying I owed over $400 on a cell phone bill for a phone provider I hadn't been with in over 5 or 6 years! I looked up FNCB online, found a TON of boards like this one, all talking about what a scam that place is. I also looked FNCB up on the Better Business Bureau website. Not only are they not a BBB-accredited business, but the BBB gave them an F rating (A+ is best, F is worst).
I called FNCB to dispute the charge, saying I have no outstanding bills with that phone company, and that if I did--wouldn't they have tried to reach me at some point in the last 6 years? After the guy was snotty with me, I told him about the BBB rating, and about my internet research. He said that FNCB had just recently received my claim, and were trying to collect on behalf of another collection agency (Jefferson Capital), but wouldn't give me any of their information. He said he didn't have Jefferson Capital's information (which I thought was odd since JC contracted FNCB to do work for them), and even if he gave me the phone number, JC would just send me back to FNCB anyway. He then advised me to check my credit report since I was so "into" researching, and call him back.
So instead, I called the phone company directly and spoke with the finance department manager. They had absolutely NO records whatsoever of my account being delinquent, and said that they don't officially "close" accounts until the final bill has been proven collected. The phone company said, and I quote, "Do NOT pay them a dime."
So I called FNCB back, spoke with a different girl. She read the notes, and said "Well, did you go look up your credit report?" I said, "No. I called [phone company] directly to get to the bottom of this." She said "Oh...you did?". I proceeded to tell her about my conversation with them in detail, and she immediately responded "Ok. We'll close out your account now."
Just like that...she didn't even say she needed to verify the information I gave was accurate or require me to send any paperwork at all. Can you say SCAMMER?