STRANGE CALL

I just received a call from a woman who identified herself as Connie Kindle from FNCB asking for my husband. I said he wasn't here and she gave me a phone number to call her back. When I asked if there was an extension number---she replied, "no". The number was 1-800-824-6191. I hung up and immediately called the number she gave me. Tanya answered (not her real name I'm sure). I told her about the call and ask to speak to Connie. She said yes Connie worked there, but she didn't know her extension number. I ask what the call was about and she told me they were a collection agency. I immediately became alarmed as we have excellant credit and no outstanding bills for collection. I told her this. She offered to get her supervisor. When she came back on the phone she apologized for bothering us and said our phone number and name had been removed from their computers and we would not be called again.
WHAT THE HECK IS THIS!?????!!!!!!!!!! Does anyone know? Please repond.