It's a scammer. Person calling from the number said they were from my credit card company wanting to lower my rate - and told me my credit card number. Then they asked me for my checking account information related to my credit card. When I told them that I didn't think that they should need that to access my credit card info they insisted. I said no and told them I would contact my credit company back if I decided to get a lower rate and hung up. Immediately following I received 4 calls from an anonymous caller - back to back, but I did not answer.
I quickly called my credit card company. They confirmed that they were not the ones who contacted me and immediately cancelled out that card.