Who called from 5042497968

calls every day, but never leaves a message, i could call back if i only knew who's calling

I called back twice. They claimed to be Credit One Bank and asked for a Credit Card Number; and would not say who they wanted to speak to.  I refused and still insisted that I give them a Credit Card Number so they could tell me who the person was they wanted to speak to.  I, then, hung up.