I got a recorded message from this number, asking me to call about activity on my credit card. Had to listen to it 3 times to understand the name of the company: UMB. This is a credit card management company that many banks hire to handle their credit cards. I did not return the call directly, however, but instead called the number on the back of my credit card. That way I knew for sure who I was talking to. It did turn out that their computer had discovered irregular spending locations on my card in the past few days -- due to someone else using a fake card with my number on it. So the call was legit, and I'm grateful that UMB caught the fraud in a hurry, but I still returned the call to a number I was sure of.